Spurs guard Stephon Castle exits game with pelvis injury

San Antonio Spurs guard Stephon Castle was ruled out of Tuesday's road game against the Los Angeles Lakers following a second-quarter pelvis injury.

Castle fell on his tailbone after blocking the Lakers' Rui Hachimura on a fast-break dunk attempt with just over four minutes remaining in the first half. He went to the locker room after the play and was ruled out after halftime.

According to the Spurs, X-rays were negative and Castle was diagnosed with a pelvis contusion.

Castle, 21, had two points with seven assists in 12 minutes as the Spurs roared out to an 84-55 halftime lead against the short-handed Lakers.

Last season's NBA Rookie of the Year has averaged 17.1 points with 7.0 assists in 42 games (41 starts) this season. In his two NBA seasons, he has averaged 15.5 points with 5.1 assists in 123 games (88 starts).