Tennessee softball took a "gut-punch" from Oklahoma in walkoff loss in WCWS, but UT is no stranger to playing with its back against the wall.

OKLAHOMA CITY — Ella Parker hit a three-run, walk-off homer to lift Oklahoma a 4-3 win over Tennessee on Thursday in the Women’s College World Series opener for both teams. Parker’s second homer of the game off Tennessee’s Karlyn Pickens came with two outs and strengthened the Sooners’ chances of winning a fifth straight national title.