Duke freshman outfielder AJ Gracia has certainly looked more like a veteran this season for the Blue Devils. Which he’s continued to look like during the postseason, particularly in the team’s elimination game against Oklahoma on Sunday. A win over the Sooners advances Duke to the Norman Regional Final against UConn and a loss eliminates them from the NCAA Tournament. A high-stakes situation that Gracia has already stepped up and made a major impact in. An RBI single in the first inning from Gracia helped the Blue Devils score their first run of the game. But in the following inning, Gracia st…