Stephon Castle struggles in Spurs' Game 5 Finals loss to Knicks

Stephon Castle’s NBA Finals debut ended in disappointment on 18 June 2026, as the San Antonio Spurs’ 94-90 loss to the New York Knicks closed out a 1-4 series defeat in the championship round.

What happened?

The Spurs led all five games by double digits at some point, but their collapse culminated in a tight Game 5 finish in New York. Castle, the 21-year-old second-year guard, managed just six points on 1 of 10 shooting from the field and 0 of 3 from three. His poor outing capped a tough series for the young Spurs unit led by Victor Wembanyama.

Why it matters for Stephon Castle

Castle’s rough Finals showing contrasts with his role as a key building block for San Antonio’s future. The Spurs plan to pair the 21-year-old guard with Wembanyama, the 22-year-old franchise cornerstone, as the core of their rebuild. Despite the rough finish, the Spurs see Castle as part of their long-term plan.

The locker room reaction

Castle was visibly upset in the postgame locker room after the loss. Teammate Julian Champagnie stepped in with a simple message: “I just wanna see you smile, man,” Champagnie told Yahoo Sports’ Kelly Iko. The comment underscored the Spurs’ tight-knit culture even in a disappointing finish.

What comes next?

The Spurs now turn their focus to the 2026-27 season after the Finals defeat. The young squad will look to regroup and build on lessons from a series that saw Dylan Harper post a team-high 25 points off the bench in Game 5. Champagnie added 14 points on 4 of 8 shooting from three in the loss.