The San Antonio Spurs delivered one of the biggest upsets of the 2025-26 NBA season, stunning the Oklahoma City Thunder 111-109 in a nail-biting Emirates NBA Cup semifinal on Saturday night. The victory ended OKC’s franchise-record 16-game winning streak and handed the league-leading Thunder just their second loss of the season.

Victor Wembanyama’s highly anticipated return from a 12-game absence due to a left calf strain proved decisive. The 7-foot-4 superstar came off the bench in limited minutes (21) and exploded for 22 points, 9 rebounds, 2 blocks, posting a game-high +21 plus-minus. His presence transformed the game, as the Spurs outscored the Thunder by 21 points during his time on the floor.

Key Highlights from Spurs vs Thunder NBA Cup Semifinal

The Thunder, boasting a 24-1 record entering the game, raced to an early 16-point lead, dominating the first quarter 31-20. However, Wembanyama’s insertion in the second quarter ignited a massive comeback. San Antonio closed the half on a 13-0 run and carried the momentum into the second half.

A balanced Spurs attack overwhelmed OKC:

• Devin Vassell: 23 points
• De’Aaron Fox and Stephon Castle: 22 points each

Shai Gilgeous-Alexander led the Thunder with 29 points, while Chet Holmgren and Jalen Williams added 17 apiece. Despite a late push, including a desperate final play by Alex Caruso that fell short, Oklahoma City couldn’t overcome poor shooting (41% FG, 24% from three).

• Final Score: Spurs 111, Thunder 109
• Thunder Record: Falls to 24-2
• Spurs Advance To: NBA Cup Championship vs. New York Knicks on Tuesday, December 16, 2025

Wembanyama’s Impact and Emerging Rivalry

Wembanyama’s return not only boosted the Spurs (now 18-7) but highlighted a potential long-term rivalry with the Thunder. His rim protection and scoring altered OKC’s offense, forcing adjustments and opening lanes for teammates.

“Some people are built for these moments, some aren’t. We definitely are,” Wembanyama said after the game, reflecting the young Spurs’ confidence.

The Spurs, who thrived without Wembanyama (9-3 record in his absence), now look fully loaded heading into the NBA Cup final against the Knicks.

What’s Next in the 2025 NBA Cup?

San Antonio faces the New York Knicks in the championship game, aiming for their first NBA Cup title. This thrilling semifinal sends a statement: The Spurs are no longer rebuilding—they’re contenders.