The Grizzlies announced Tuesday that the decision for Brooks to receive additional treatment was made after reviewing imaging in checking Brooks as part of the team's return to play protocol. Brooks will be reevaluated in two to three weeks.
Memphis opens the season Oct. 20, hosting Cleveland.
Brooks said at media day on Sept. 27 that he broke his hand during an offseason practice reaching for a ball. His hand hyperextended and broke in two places.
Brooks averaged 17.2 points and 1.2 steals per game last season playing in 67 games and helping Memphis earn the No. 8 seed after winning two play-in games.