I notice the same stats aberration when doing stats for the volleyball team I coach. This weekend my highest rated scorer happened to be the one that got the least amount of game time. She got a spike kill on the weakside for sideout (rally score so she got a point), then served 3 quick aces, lost possession on another teammate's mistake, got pulled out for my defensive specialist to come in to receive serve, and never re-entered the game. 4 points, no errors to be deducted. She was the only player to score 4 out of the 5 times she touched the ball.