Jerryd Bayless kept Memphis alive in regulation by hitting a 3-pointer that tied the game with 3.7 seconds left in the fourth quarter and the Grizzlies came up with more dramatics in the extra period to win their second straight.
Randolph's bid to win it on a jumper misfired, but Gasol tipped it home. Westbrook's desperation 3-point attempt failed to go, leaving the Thunder with their second straight loss. Oklahoma City's lead over the charging Denver Nuggets in the Northwest Division was cut to three games. Denver has closed the gap with 13 straight victories.
Mike Conley led Memphis with 24 points while Bayless had 20. Durant scored 32 points, but made only 11-of-28 shots from the field.