With their trademark grit-and-grind mentality, the Memphis Grizzlies are making history for a franchise with little prior postseason success. Zach Randolph had 28 points and 14 rebounds, Mike Conley added 13 points and 11 assists, and the fifth-seeded Grizzlies advanced to the Western Conference finals for the first time in franchise history by beating the Oklahoma City Thunder 88-84 on Wednesday night.