TULSA, Oklahoma - Oklahoma State's Katarina Adamovic advanced to the second round of the NCAA Tennis Individual Championships with a, 2-6, 6-2, 6-4 victory against Sydney Campbell of Vanderbilt at the Michael D. Case Tennis Center on Wednesday.

"I just need to grind it out with matches like this with big stakes and every match is against a good opponent, you just have to fight against all odds and don't think about fatigue," Adamovic said.

The Cowgirl, who earned Most Outstanding Player of the NCAA Championship, battled through three sets to advance to the round of 32 after playing in the national title match on Tuesday.

After Campbell took the first set, 6-2, Adamovic battled back by winning the first four games of the second set.

Campbell took two-straight games to cut Adamovic's lead to 4-2, but the Cowgirl closed out the set, 6-2, to force a decisive final set.

Facing a 3-1 deficit in the third set, Adamovic took four-straight games to go ahead 5-3 on Campbell, who was ranked No. 18.

The Cowgirl, ranked No. 47, went on to win the final set, 6-4.

Adamovic has now defeated the No. 5, 7, 18, and 25-ranked players in the nation in the last seven days.

Adamovic will now have a rematch against No. 5 Ellen Perez, who she defeated in the team portion of the NCAA Tournament at 11:30 a.m. on Thursday.