Morgan Phillips' sacrifice fly drove in Ryan Welke with the tiebreaking run in the fourth inning and College of Charleston beat Long Beach State, 4-2, on Monday to win a regional in Gainesville, Fla.
The Cougars (44-17) advanced to the super regionals and will next face Texas Tech for a berth in the College World Series.
Welke walked to open the fourth, and moved to second when Ben Boykin was hit by a pitch from Nick Sabo. The runners advanced on Sabo's wild pitch and Nick Rosetta relieved and gave up Phillips' fly ball.
Boykin then scored on Rosetta's wild pitch to make it 4-2.
Long Beach State (34-26) took a 2-1 lead in the bottom of the first inning on Richard Prigatano's RBI double and Johnny Bekakis' run-scoring infield single.
Charleston tied it in the third when Blake Butler scored on a throwing error by Michael Hill.
Earlier in the day, Ino Patron homered and drove in five runs to help the 49ers eliminate North Carolina, 12-5, in the completion of a suspended game.
Long Beach State started the game Monday against the Tar Heels ahead 5-4 in the top of the seventh with runners on first and second after six hours of weather delays Sunday forced a postponement.
After Richard Prigatano walked to load the bases, Michael Hill ripped a two-run single off of Spencer Trayner to give the 49ers a 7-4 lead.
North Carolina (35-27) scored a run in the bottom of the seventh on an RBI double by Tyler Ramirez, but Long Beach State scored five runs in the top of ninth.
Irvine will play Oklahoma State in a best-of-three series for a berth in the College World Series.
Stanford 5, Indiana 4: Tommy Edman hit a two-run homer in the bottom of the ninth to lift the Cardinal over the host Hoosiers in the championship game of the Bloomington Regional.
Stanford (34-24) play at Vanderbilt in a super regional.
Wayne Taylor started the ninth with a single through the middle and moved to second on Brett Michael Doran's bunt before Edman's blast.
Indiana's Nick Ramos broke a 3-3 tie with an infield single in the top of the eighth. Craig Dedelow had three hits, including an RBI single for the Hoosiers (44-15). Kyle Schwarber hit a two-run homer in the third.
Stanford answered with run-scoring singles by Alex Blandino and Zach Hoffpauir in the bottom of the third. Dominic Jose tied the score with a solo homer in the sixth.