Stephon Castle Is Giving Spurs Fans Real Reason To Believe

As Stephon Castle emerges as a defensive force, we examine how he stacks up against the NBA's top shooting guard defenders in both accolades and performance.

Stephon Castle’s rise in San Antonio came with a clear calling card: defense. Last season, the Spurs sophomore made a habit of taking the toughest assignment on the floor and making life miserable for elite scorers. That kind of impact naturally raises the question of where he stacks up against the NBA’s best at his spot.

On a list of the league’s seven top defenders at shooting guard, Castle lands fifth. He’s in good company, too, because the names ahead of him are all established disruptors with strong cases of their own.

At the top of the group sits Amen Thompson, whose size, speed, and absurd athletic tools make him a defensive force for a Rockets team that has become known for suffocating opponents. Thompson missed out on All-Defense in 2025-26 after earning First Team honors in 2024-25, but at 23, he looks built for a long run near the top of these kinds of rankings.

Right behind him is Alex Caruso, whose influence on Oklahoma City’s defense can be easy to miss because the unit is so loaded. Even so, his ability to erase different kinds of threats and tilt playoff games on that end keeps him near the front of the line. His basketball IQ and versatility make him a problem on every possession, whether he’s the main defender or not.

Derrick White checks in third after continuing to strengthen his case since arriving in Boston in 2022. He made the All-Defensive First Team in 2025-26 and somehow finished 13th in the league in total blocks, which is an eye-popping number for a guard and a reminder of how disruptive he is from all over the floor.

Cason Wallace lands fourth after earning one of Oklahoma City’s two All-Defensive selections last season. The 22-year-old led the NBA in total steals and ranked third in steals per game, but the damage doesn’t stop there. He’s also a nightmare to screen off the ball and remains plenty effective in on-ball situations.

Castle comes next, and the case for him is straightforward: even without an All-Defensive nod in 2025-26, he was still one of the league’s premier clamps. The source notes that he finished just a few votes short of the Second Team, and that every opponent he saw felt the heat. To move up, he’ll need to rein in the fouls and add more value away from the ball and within the scheme.

The rest of the list rounds out with familiar defensive headaches. Herb Jones comes in sixth, prized for his ability to switch from one through five and bother guards or help at the rim, even if injuries and a shaky situation in New Orleans have limited his visibility. His All-Defensive First Team honor and top-five Defensive Player of the Year finish from 2023-24 still speak loudly.

Kris Dunn lands seventh, with his defensive rebirth carrying his post-Chicago career. He pressures ball handlers early, turns every dribble into a problem, and has brought that edge night after night, playing 74 games in 2024-25 and all 82 in 2025-26 for a Clippers team that has been effective on defense. His lack of All-Defensive recognition doesn’t fully reflect the impact he’s had.

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