Castle finished with 16 points (6-14 FG, 1-5 3Pt, 3-4 FT), four rebounds, three assists and two steals across 24 minutes off the bench in Thursday's 129-107 preseason loss to the Rockets.
Castle led the Spurs in points and was a disruptive presence on both ends of the court. The fact that he also led the team in minutes played is an encouraging sign of his role in the rotation. He's not likely to open the regular season as a starter, but he should see decent minutes off the bench at both guard spots.