Matt Kent buried the game-winning shot at the buzzer after getting the ball on a deflection and the steal as the Cougars won the Trico League game on the road.
Seton (3-8, 2-2) was down by nine with four minutes to play. The Cougars battled back thanks to two 3-pointers by Luke Pitzer, to tie the game with about 18 seconds to play. Then they forced one of their 27 turnovers to get the ball for the game-winner.
SETON CATHOLIC 56, CASTLE ROCK 54
SETON CATHOLIC — Henry Demsky 8, Isaiah Parker 12, Matthew Kent 19, Luke Pitzer 6, Hayden Miller 0, Malik Williams 7, Andrew Olson 4, Zach Cowger 0. Totals 22 (5) 7-14 56.
CASTLE ROCK — Connor Edwards 18, Skyler King 11, Ethan Perdue 8, Parker Patching 5, Nathan Smith 7, Michael Gaze 0, Jonny Boissonnault 5. Totals 20 (7) 7-16 54.
