UConn forced a second regional final Monday, with the winner advancing to super regionals next week.
The Huskies (39-24) beat Nebraska 16-1 in an elimination game in the afternoon and then turned to their bullpen to keep their season going.
Caleb Wurster (5-1) came on after Jeff Kersten ran into trouble in the third inning, and he, CJ Dandeneau and Jacob Wallace held the Cowboys (38-19) in check the rest of the way. Wallace earned his 16th save.
The Huskies used three sacrifice flies to go up 3-0, and after Oklahoma State pulled within a run, Prato broke things open with a two-run shot to left.
Brett Standlee (3-2) went 6 2/3 innings and took the loss.
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