The Grizzlies entered the playoffs as the seventh seed and faced the Oklahoma City Thunder. Allen recorded 10 offensive rebounds in Game 4 against the Thunder, becoming the sixth reserve to record 10+ offensive rebounds in a postseason game since the 1986 Playoffs, joining centers John Salley, Roy Tarpley, Jayson Williams, Greg Ostertag and Jeff Foster. He finished Game 4 with 14 points and 13 rebounds, becoming the second Grizzlies reserve to register a double‐double in a playoff game, joining Lorenzen Wright (10 points, 10 rebounds on April 29, 2006). The Grizzlies were ultimately eliminated by the Thunder in seven games.