Sitting on a 6-0 lead last Saturday against Texas A&M, the No. 1 seed in this week’s SEC Tournament secured, Oklahoma coach Patty Gasso decided it was time to give Allyssa Parker a chance. “You’ve got to give opportunity,” Gasso said. The move worked initially, as Parker quickly retired the side in the sixth, before the freshman ran into some trouble in the seventh with a walk, two singles and a home run before Parker gave way to Audrey Lowry to close the game. But Gasso wants Parker to be ready to come into games late in the postseason and she wanted to continue to build trust in the Pocola native. “Allyssa Parker is sitting in the bullpen waiting to be a closer and never needing closing and we are needing to get her in games,” Gasso said. “We need to get her sewing in games, we need to figure out there that is. She’s been working at third, she’s been working at first, but she’s been working mostly in the bullpen.…