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Memphis, TN (Sports Network) - The Memphis Grizzlies inched closer to a franchise first as they came back and defeated the Oklahoma City Thunder in overtime of Game 4, 103-97, to take control of the Western Conference semifinals.

Mike Conley scored a team-high 24 points while Zach Randolph and Marc Gasol chipped in with 23 apiece to go with 12 and 11 rebounds, respectively, for Memphis, which has gone 19-1 at FedExForum in the past three months, including a perfect 5-0 mark in the postseason.

Two years ago, the Grizzlies blew an 18-point lead against the Thunder in Game 4 of the West semis and wound up falling in triple-overtime to squander a 2-1 lead in a series they eventually lost in seven games.

This time, however, Memphis came away with a 3-1 advantage by rallying from 17 points down to put itself on the brink of its first appearance in a conference final.

Oklahoma City had five players score in double figures for the first time all series but shot just 33 percent from the field after the break, including a 1- for-8 effort in overtime.

Kevin Durant was limited down the stretch but still finished with 27 points, seven rebounds and seven assists to lead the Thunder, who received 18 points from Kevin Martin and a double-double from Serge Ibaka.