The Grizzlies hired Greg Buckner as an assistant coach, and he will join the bench Friday night when they host the Toronto Raptors, according to a source close to the team. Buckner, 41, most recently served as an analyst for Fox Sports Southwest. He opined during the pregame, halftime and post-game shows during Dallas Mavericks games. Buckner worked with Grizzlies interim coach J.B. Bickerstaff on the Houston Rockets' staff.