A Tennessee Tech team that boasts the nation's most high-powered offense relied on its pitching to earn the biggest win in program history Monday night.

The Golden Eagles of the Ohio Valley Conference knocked No. 4 national seed Mississippi out of the NCAA Tournament by beating the Rebels twice, 15-5 in the afternoon and 3-2 to clinch the Oxford Regional title.

Tech joins Duke, Minnesota, Stetson and Washington as teams that will make their first appearances in super regionals. Winners in those eight best-of-three series advance to the College World Series in Omaha, Nebraska.

Eight of the 16 national seeds have been eliminated in regionals, including four of the top eight.

Defending national champion Florida, the No. 1 overall seed, played Florida Atlantic late Monday night in the Gainesville Regional final. Florida Atlantic forced a second final with a 7-4 win earlier in the evening.

Tennessee Tech, a No. 2 regional seed, has put up some of the college game's biggest offensive numbers in years this season, but it was the pitching of closer-turned-starter Ethan Roberts in the afternoon and Devin Lancaster and Nick Osborne at night that carried the Golden Eagles against Ole Miss.

Lancaster went the first 5 1/3 innings, allowing two runs on four hits. Osborne came on to start the seventh after playing the first six innings in right field and allowed two hits the rest of the way to make Kevin Strohschein's seventh-inning sacrifice fly stand up.

In the first game, Roberts, normally the closer, made his second start in 63 appearances and went a career-long 7 2/3 innings before leaving the game with a 10-2 lead.

Duke beat Georgia 8-5 in the afternoon before locking up the regional title with an 8-4 win.

Mississippi State defeated Oklahoma for the second time in two days in Tallahassee, Florida, and is in a super regional for the third straight year. The Bulldogs are the first team since the tournament went to its current format in 1999 to win a regional in back-to-back years after losing the first game.

MSU beat the Sooners 13-5 on Sunday and 8-5 on Monday.