STILLWATER, Oklahoma – Nebraska baseball has its back against the wall once again. The Huskers must win a double header on Sunday, first in a rematch with Florida and then Oklahoma State (2-0), to extend its season. Josh Holliday’s Cowboys dominated Florida 7-1 on Saturday night to advance to the Stillwater Regional Final and knock the Gators into the loser’s bracket. Oklahoma State hit back-to-back jacks in the first off Jac Caglianone and replicated that effort in the third to take a 4-0 lead. That was more than enough for Cowboy ace Brian Holiday to finish the job. In a 131-pitch effort, th…