I cannot recall seeing a bigger ball hog that Riley during her college days. I saw OSU lose to GA in the NCAA regionals here in Tempe a couple of years ago. The reason was largely because Riley, aided and abetted by her (IMHO) not very good coach, took virtually every shot at the end of the game and missed far more than she made. The funny thing was there was at least one other decent shooter on that team, and she was hot that night, but do you think they gave her the ball? Hell, no.
The GA coach, who may not have had as good a team, employed a strategy of allowing multiple players to touch the ball, and GA won.