San Antonio Spurs vs OKC Thunder Starting Lineups Tonight (Dec. 13) | 2025-26 NBA Cup Semifinal

The San Antonio Spurs will play the OKC Thunder in the NBA Cup semifinal at the T-Mobile Arena in Las Vegas on Saturday. The Spurs (17-7) have been holding their own against some of the best teams in the league. They are in fifth place in the Western Conference standings following a 132-119 win over the LA Lakers on Wednesday.

The Thunder (24-1), meanwhile, have dominated the league since the season started. They have continued their championship form and are sitting in first place in the West. They extended their winning streak to 16 on Wednesday following a 138-89 win over the Phoenix Suns.

San Antonio Spurs vs. OKC Thunder Starting Lineups Tonight

San Antonio Spurs starting lineup

The Spurs are expected to start De'Aaron Fox at point guard, Stephon Castle at shooting guard, Deviiin Vassell at small forward, Harrison Barnes at power forward, and Luke Kornet at center. Dylan Harper is expected to come off the bench to rest Fox.

Spurs depth chart against the Thunder:

Point Guard	De'Aaron Fox	Dylan Harper
Shooting Guard	Stephon Castle	Julian Champagnie	Lindy Waters III
Small Forward	Devin Vassell	Keldon Johnson
Power Forward	Harrison Barnes	Jeremy Sochan
Center	Luke Kornet	Bismack Biyombo	Kelly Olynyk

OKC Thunder starting lineup

Shai Gilgeous-Alexander is expected to take the floor at point guard and form the backcourt with Lugentz Dort. Jalen Williams will play at small forward, while Chet Holmgren will play at power forward. Isaiah Hartenstein will suit up to play at center.

Thunder depth chart against the Spurs:

Point Guard	Shai Gilgeous-Alexander	Ajay Mitchell
Shooting Guard	Luguentz Dort	Cason Wallace
Small Forward	Jalen Williams	Isaiah Joe
Power Forward	Chet Holmgren	Aaron Wiggins	Ousmane Dieng
Center	Isaiah Hartenstein	Jaylin Williams	Branden Carlson

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San Antonio Spurs vs. OKC Thunder Injury Reports

San Antonio Spurs injury report

The Spurs will have Victor Wembanyama back in this game. The defensive big man had been sidelined due to a calf strain.

OKC Thunder injury report

The Thunder are heading into the matchup with three players confirmed to be on the bench. Isaiah Joe is out with a knee injury, while Nikola Topic remains out after being diagnosed with testicular cancer in late October.

Thomas Sorber is sidelined for the entire season because of a torn ACL he suffered during an offseason workout.

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San Antonio Spurs vs. OKC Thunder Key Matchups

De'Aaron Fox vs. Shai Gilgeous-Alexander is a matchup to keep an eye on. While SGA has continued his MVP form, averaging 32.6 points, 4.6 rebounds and 6.5 assists per game on 56.2% shooting, Fox has been consistent for the Spurs.

The Spurs guard is averaging 24.0 points, 3.8 rebounds, and 6.3 assists per game on 48.6% shooting. He has scored 20 or more points in four of his last five games.