The Diamond, home of the Class-A Lake Elsinore Storm, was also named as a regional site. UC Santa Barbara will be the host.
Fullerton, the Big West champion, won its last six games heading into the tournament. The Titans are 34-22 and 19-5 in Big West play.
Louisiana State, Illinois, Texas A&M, Miami, Dallas Baptist, Texas Christian, Florida, Houston, Louisville, Vanderbilt, Missouri State, Oklahoma State and Florida State will also host regionals.
The NCAA pairings will be announced Monday morning.
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