PALO ALTO, Calif.—Simon says, “Game over!” And for Arkansas it was.

Because like the childhood game “Simon Says,” Pepperdine center fielder Nate Simon said it was over, 4-3 for Arkansas with his sensational, game-ending diving ninth-inning catch in Friday first-round game of the 4-team double-elimination Stanford Regional.

Simon’s snag of Casey Coon’s liner slicing away left of left-center stranded Razorbacks at first and third in Friday’s ninth and dumped Arkansas into today’s 3 p.m. loser’s bracket at Stanford’s Sunken Diamond.

Arkansas plays the loser of ...