Highly touted rookie O.J. Mayo scored a game-high 26 points as the Memphis Grizzlies improved to 2-0 at the 2008 NBA Summer League with an 88-79 victory over the Milwaukee Bucks on Saturday.

On Friday, Mayo, a former USC guard who was chosen No. 3 overall in the NBA draft, made his professional debut with 15 points, five assists and three steals in the Grizzlies' 88-75 win over the New Orleans Hornets.

Ramon Sessions led Milwaukee with 12 points, while Matt Freije and Trey Johnson each scored 11 in the defeat.