4 min read

Underdog Promo Code PROPS: Play $5, Get $75 in Bonus Entries for NBA Cup Finals

Justin Carlucci

Justin Carlucci

Last updated: December 18, 2025

Sixers vs Knicks Predictions, Prips, Odds & Expert Picks Today - Friday, Dec. 19

What’s good, Props fam! The NBA Cup Finals are here, and if you’re looking to build pick’em slips for tonight’s championship showdown between the Knicks and Spurs, the Underdog promo code makes it very easy to build a bankroll! New users can play just $5 with Underdog promo code PROPS to get $75 in bonus entries. 

Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply. See assets.underdogfantasy.com/web/PlayandGetTerms_DFS_.html for details. Offer not valid in MD, MI, OH, and PA. Concerned with your play? Call 1-800-GAMBLER or visit www.ncpgambling.org; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369)

Below is everything you need to know about the Underdog bonus code, plus our complete breakdown of Knicks vs Spurs props, and more key info about tonight’s championship.

Check out some popular NBA Cup Finals props on Underdog:

Popular Underdog Props: Underdog Promo Code Dec. 16

Underdog Promo Code & Bonus Entry Offer

Play $5, Get $75 in Bonus Entries
Promo Code: PROPS
✅ $75 in Bonus Entries (basically free plays)
✅ 18+ to play (19+ in AL, NE; 21+ in AZ, MA, VA)
✅ Available in 40+ states

Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply. See assets.underdogfantasy.com/web/PlayandGetTerms_DFS_.html for details. Offer not valid in MD, MI, OH, and PA. Concerned with your play? Call 1-800-GAMBLER or visit www.ncpgambling.org; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369)

How the Underdog Bonus Code Works

Check out this awesome welcome offer courtesy of Underdog! You can also see our full review of Underdog before you sign up!

  • Step 1: Enter Underdog promo code PROPS when you register at Underdog Fantasy
  • Step 2: Make your first deposit and play at least $5
  • Step 3: Bang (Mike Breen voice)! You get $75 in bonus entries instantly
  • Step 4: Use those $75 bonus entries to build pick’em slips with zero out-of-pocket risk

Your bonus entries are separate from your real money balance. You can build pick’em slips specifically with the $75 in free plays and see if you can turn it into actual winnings. No rollover requirement—just play and see what hits.

Important details:

  • Bonus entries expire 30 days after issuance
  • Must be 18+ (19+ in AL, NE; 21+ in AZ, MA, VA)
  • Available in 40+ states (NOT MD, MI, OH, PA)
  • Winnings from bonus entries are real money you can withdraw

Why this matters for tonight: You get $75 in free plays to test out Underdog’s pick’em slip builder on the NBA Cup Finals. No risk. All upside.

CLAIM YOUR UNDERDOG BONUS ENTRIES NOW!

Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply. See assets.underdogfantasy.com/web/PlayandGetTerms_DFS_.html for details. Offer not valid in MD, MI, OH, and PA.

Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply. See assets.underdogfantasy.com/web/PlayandGetTerms_DFS_.html for details. Offer not valid in MD, MI, OH, and PA. Concerned with your play? Call 1-800-GAMBLER or visit www.ncpgambling.org; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369)

NBA PLAYER PROPS LIVE ODDS

Filters:
Player
Alperen Sengün
C HOU @ DEN
Today 5:00 PM ET
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Amen Thompson
SG HOU @ DEN
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Bruce Brown
SG HOU @ DEN
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Cameron Johnson
PF HOU @ DEN
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Jabari Smith Jr.
PF HOU @ DEN
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Jamal Murray
PG HOU @ DEN
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Jonas Valančiūnas
C HOU @ DEN
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Josh Okogie
SG HOU @ DEN
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Kevin Durant
PF HOU @ DEN
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Nikola Jokić
C HOU @ DEN
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Peyton Watson
SF HOU @ DEN
Today 5:00 PM ET
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Reed Sheppard
PG HOU @ DEN
Today 5:00 PM ET
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Spencer Jones
PF HOU @ DEN
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Steven Adams
C HOU @ DEN
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Tim Hardaway Jr.
SF HOU @ DEN
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Andrew Nembhard
PG IND @ NO
Today 7:00 PM ET
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Anfernee Simons
SG BOS @ TOR
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Anthony Davis
C DAL @ PHI
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Bennedict Mathurin
SG IND @ NO
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Brandon Ingram
SF BOS @ TOR
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Brandon Williams
PG DAL @ PHI
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Collin Murray-Boyles
PF BOS @ TOR
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Cooper Flagg
PF DAL @ PHI
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Derik Queen
C IND @ NO
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Derrick White
SG BOS @ TOR
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Dominick Barlow
PF DAL @ PHI
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Herbert Jones
SF IND @ NO
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Immanuel Quickley
PG BOS @ TOR
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Isaiah Jackson
PF IND @ NO
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Jakob Poeltl
C BOS @ TOR
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Jamal Shead
PG BOS @ TOR
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Jay Huff
C IND @ NO
Today 7:00 PM ET
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Jaylen Brown
SG BOS @ TOR
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Jeremiah Fears
PG IND @ NO
Today 7:00 PM ET
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Joel Embiid
C DAL @ PHI
Today 7:00 PM ET
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Jordan Walsh
SF BOS @ TOR
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Naji Marshall
SF DAL @ PHI
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Neemias Queta
C BOS @ TOR
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Ochai Agbaji
SG BOS @ TOR
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Pascal Siakam
PF IND @ NO
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Paul George
SF DAL @ PHI
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Payton Pritchard
PG BOS @ TOR
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P.J. Washington
PF DAL @ PHI
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Quentin Grimes
SG DAL @ PHI
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Saddiq Bey
PF IND @ NO
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Sam Hauser
SF BOS @ TOR
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Scottie Barnes
SF BOS @ TOR
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T.J. McConnell
PG IND @ NO
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Trey Murphy III
SF IND @ NO
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Tyrese Maxey
PG DAL @ PHI
Today 7:00 PM ET
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VJ Edgecombe
SG DAL @ PHI
Today 7:00 PM ET
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Zion Williamson
PF IND @ NO
Today 7:00 PM ET
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Ausar Thompson
SG CHA @ DET
Today 7:30 PM ET
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Brandon Miller
SF CHA @ DET
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Cade Cunningham
PG CHA @ DET
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Caris LeVert
SF CHA @ DET
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Duncan Robinson
SG CHA @ DET
Today 7:30 PM ET
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Isaiah Stewart
PF CHA @ DET
Today 7:30 PM ET
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Jalen Duren
C CHA @ DET
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Kon Knueppel
SG CHA @ DET
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LaMelo Ball
PG CHA @ DET
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Miles Bridges
SF CHA @ DET
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Moussa Diabaté
PF CHA @ DET
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Ryan Kalkbrenner
C CHA @ DET
Today 7:30 PM ET
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Sion James
SG CHA @ DET
Today 7:30 PM ET
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Tobias Harris
SF CHA @ DET
Today 7:30 PM ET
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Alexandre Sarr
PF WAS @ MEM
Today 8:00 PM ET
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Bilal Coulibaly
SG WAS @ MEM
Today 8:00 PM ET
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Brandon Clarke
PF WAS @ MEM
Today 8:00 PM ET
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Cam Spencer
SG WAS @ MEM
Today 8:00 PM ET
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Cedric Coward
SG WAS @ MEM
Today 8:00 PM ET
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CJ McCollum
PG WAS @ MEM
Today 8:00 PM ET
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Jaren Jackson Jr.
PF WAS @ MEM
Today 8:00 PM ET
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Jaylen Wells
SF WAS @ MEM
Today 8:00 PM ET
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Jock Landale
C WAS @ MEM
Today 8:00 PM ET
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Kentavious Caldwell-Pope
SG WAS @ MEM
Today 8:00 PM ET
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Khris Middleton
SF WAS @ MEM
Today 8:00 PM ET
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Kyshawn George
SF WAS @ MEM
Today 8:00 PM ET
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Santi Aldama
PF WAS @ MEM
Today 8:00 PM ET
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Brandin Podziemski
SG PHO @ GS
Today 8:30 PM ET
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Buddy Hield
SF PHO @ GS
Today 8:30 PM ET
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Collin Gillespie
Collin Gillespie
PHO PG PHO @ GS
Today 8:30 PM ET
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De'Anthony Melton
SG PHO @ GS
Today 8:30 PM ET
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Devin Booker
Devin Booker
PHO SG PHO @ GS
Today 8:30 PM ET
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Dillon Brooks
Dillon Brooks
PHO SF PHO @ GS
Today 8:30 PM ET
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Draymond Green
PF PHO @ GS
Today 8:30 PM ET
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Grayson Allen
Grayson Allen
PHO SF PHO @ GS
Today 8:30 PM ET
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Jimmy Butler III
SF PHO @ GS
Today 8:30 PM ET
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Jordan Goodwin
Jordan Goodwin
PHO PG PHO @ GS
Today 8:30 PM ET
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Mark Williams
Mark Williams
PHO C PHO @ GS
Today 8:30 PM ET
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Moses Moody
SG PHO @ GS
Today 8:30 PM ET
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Oso Ighodaro
Oso Ighodaro
PHO PF PHO @ GS
Today 8:30 PM ET
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Quinten Post
C PHO @ GS
Today 8:30 PM ET
- - -
Royce O'Neale
Royce O'Neale
PHO PF PHO @ GS
Today 8:30 PM ET
- - - - - - - - -
Stephen Curry
PG PHO @ GS
Today 8:30 PM ET
- - -
Ace Bailey
SF ORL @ UTA
Today 9:30 PM ET
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Anthony Black
PG ORL @ UTA
Today 9:30 PM ET
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Desmond Bane
SG ORL @ UTA
Today 9:30 PM ET
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Jusuf Nurkić
C ORL @ UTA
Today 9:30 PM ET
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Keyonte George
SG ORL @ UTA
Today 9:30 PM ET
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Kyle Filipowski
C ORL @ UTA
Today 9:30 PM ET
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Paolo Banchero
PF ORL @ UTA
Today 9:30 PM ET
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Svi Mykhailiuk
SF ORL @ UTA
Today 9:30 PM ET
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Tyus Jones
PG ORL @ UTA
Today 9:30 PM ET
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Wendell Carter Jr.
C ORL @ UTA
Today 9:30 PM ET
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DeMar DeRozan
SF POR @ SAC
Today 10:00 PM ET
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Deni Avdija
SF POR @ SAC
Today 10:00 PM ET
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Dennis Schröder
PG POR @ SAC
Today 10:00 PM ET
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Donovan Clingan
C POR @ SAC
Today 10:00 PM ET
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Jerami Grant
PF POR @ SAC
Today 10:00 PM ET
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Keegan Murray
PF POR @ SAC
Today 10:00 PM ET
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Keon Ellis
SG POR @ SAC
Today 10:00 PM ET
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Maxime Raynaud
C POR @ SAC
Today 10:00 PM ET
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Precious Achiuwa
PF POR @ SAC
Today 10:00 PM ET
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Robert Williams III
C POR @ SAC
Today 10:00 PM ET
- - - - - - - - -
Russell Westbrook
PG POR @ SAC
Today 10:00 PM ET
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Shaedon Sharpe
SG POR @ SAC
Today 10:00 PM ET
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Toumani Camara
SF POR @ SAC
Today 10:00 PM ET
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Bogdan Bogdanović
SG LAL @ LAC
Today 10:30 PM ET
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Ivica Zubac
C LAL @ LAC
Today 10:30 PM ET
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Jake LaRavia
PF LAL @ LAC
Today 10:30 PM ET
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James Harden
SG LAL @ LAC
Today 10:30 PM ET
- - -
Jarred Vanderbilt
SF LAL @ LAC
Today 10:30 PM ET
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Jaxson Hayes
C LAL @ LAC
Today 10:30 PM ET
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John Collins
PF LAL @ LAC
Today 10:30 PM ET
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Kawhi Leonard
SF LAL @ LAC
Today 10:30 PM ET
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Kris Dunn
PG LAL @ LAC
Today 10:30 PM ET
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LeBron James
SF LAL @ LAC
Today 10:30 PM ET
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Luka Dončić
PG LAL @ LAC
Today 10:30 PM ET
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Marcus Smart
PG LAL @ LAC
Today 10:30 PM ET
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Nicolas Batum
PF LAL @ LAC
Today 10:30 PM ET
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Rui Hachimura
PF LAL @ LAC
Today 10:30 PM ET
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Showing 5 of 132

Knicks vs Spurs NBA Cup Finals: Building Winning Pick’em Slips on Underdog

Tonight, we have New York (18-7) vs San Antonio (18-7) at T-Mobile Arena in Las Vegas. Knicks -2.5, total 234.5. Let’s dig into more important information.

NBA Cup Finals Game Info

  • Game: San Antonio Spurs (18-7) vs New York Knicks (18-7)
  • Time: 8:30 PM ET, Tuesday, December 16, 2025
  • Location: T-Mobile Arena, Las Vegas
  • TV: Amazon Prime Video
  • Spread: Knicks -2.5
  • Moneyline: Spurs +120, Knicks -140
  • Total: 234.5

What’s at stake: The NBA Cup championship trophy, bragging rights, and $500,000 per player for the winning team ($200,000 for the runner-up). This game doesn’t count in the regular season standings, but the competition is real.

How To Use Underdog Welcome Offer

Here’s the thing: Underdog lets you build Higher/Lower pick’em slips where you decide if a player will go over or under a stat total. These work exactly like player props at sportsbooks, but with a DFS-style twist.

How it works:

  • You pick if a player goes HIGHER or LOWER than their stat line
  • Single-entry picks pay 1x your entry (e.g., $100 entry = $100 profit)
  • Stack multiple picks together for multiplied payouts (2 picks = 3x, 3 picks = 6x, etc.)

Example for tonight: “Knicks control the paint, OG Anunoby dominates the glass, Jalen Brunson facilitates.”

How that builds on Underdog:

  • OG Anunoby HIGHER 4.5 rebounds
  • Jalen Brunson HIGHER 6.5 assists

That’s a coherent narrative, not random props. Each pick feeds the same story.

Best Underdog Props Tonight: Bonus Code Plays

Let’s jump into the good stuff!

OG Anunoby HIGHER 4.5 Rebounds

This is the anchor prop for any Knicks pick’em slip tonight.

OG Anunoby has been dominating the glass in the Knicks’ recent stretch. Over his last 5 games, he’s averaging 10 rebound chances per game—that’s elite volume for a wing player.

OG’s Recent Rebound Performance:

  • Dec 13 vs Orlando: 6 rebounds (40 minutes, NBA Cup semifinals)
  • Dec 9 @ Toronto: 6 rebounds
  • Dec 7 vs Orlando: 7 rebounds
  • Nov 9 vs Brooklyn: 8 rebounds
  • Nov 5 vs Minnesota: 8 rebounds

He’s cleared 4.5 rebounds in every single game in his last 5. Against a Spurs team that attacks the paint with Victor Wembanyama and Jeremy Sochan, the Knicks will need OG crashing the glass hard.

Stephon Castle HIGHER 17.5 Points

Here’s where sharp bettors are moving: Stephon Castle has seen massive usage since returning from injury for the Spurs.

Castle, San Antonio’s rookie guard, has been cooking lately. His usage rate has skyrocketed in recent games, and he’s expected to play heavy minutes in tonight’s NBA Cup Finals with Wembanyama commanding double-teams.

Castle’s Recent Scoring:

  • Averaging 15.1 PPG on the season
  • Posted 26 points on Nov 2 vs Phoenix
  • Posted 22 points on Oct 27 vs Toronto
  • Huge free-throw rate: 4.6 FTA per game (gets to the line consistently)

Against a Knicks defense that ranks middle of the pack in perimeter defense, Castle should see opportunity. If Wembanyama draws help defense in the paint, Castle gets clean looks from three and driving lanes.

Victor Wembanyama Props on Underdog

Wemby just returned from a 12-game absence due to a left calf injury and immediately went off in the semifinals: 22 points, 9 rebounds, 2 blocks in just 21 minutes against OKC.

The beautiful thing about playing on Underdog is that you DO NOT have to make a decison on anything Wemby-related.

Jalen Brunson Props on Underdog

Brunson has been elite in the NBA Cup run. He dropped a vintage performance in the semifinals against Orlando and is the Knicks’ primary offensive engine.

Brunson’s Season Stats:

  • Averaging 25+ PPG and 7+ APG
  • Elite free-throw rate
  • Thrives in big-moment games

He’s been such a great scorer that I’m leaning lower than 6.5 assists.

Good luck, and take advantage of this Underdog Promo Code!

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