Tennessee ace Karlyn Pickens carried her team across the finish line, and the Volunteers handed Oklahoma its first series defeat of the season with a 5-3 victory. The No. 2-ranked Sooners were unable to cash in on Abigale Dayton’s leadoff walk in the fifth or her two-out single in the seventh.

Oklahoma softball knew it had a challenge ahead when reigning SEC Pitcher of the Year Karlyn Pickens rolled into town. In last week’s Lady Vols' win over Arkansas, Pickens set the record for fastest-recorded pitch in softball history when she was clocked at 78.

The second-ranked Oklahoma softball team was done in by a former Sooner in its series opener against Tennessee.