Austin Slater drilled an RBI double and a solo home run, but Indiana knocked off Stanford, 4-2, Saturday evening.
John Hochstatter allowed four runs over 7 1/3 innings in front of 4,312 fans, a Bart Kaufman Field record, to lose for the first time since Feb. 15.
"They are a very veteran team, a lot of older players, and they are very dangerous throughout the lineup," Stanford coach Mark Marquess said. "They were better than they were tonight. They won the big spots and played better than we did."
Indiana (43-13) never trailed on its way to the Bloomington Regional final. The Cardinal had the game tied in the first, 1-1, but single runs by the Hoosiers in the third, fifth and eighth doomed Stanford to Sunday's semifinal against Youngstown State (17-37) at 1 p.m. ET. The winner faces Indiana at 6 p.m. ET.
"The good news is we didn't use a lot of arms tonight," Marquess said. "So we have enough arms. It's a doubleheader tomorrow hopefully for us if we can win the first one."
Stanford (31-24) was outhit, 10-7, to snap a seven-game regional winning streak dating to 2010.
Slater and Tommy Edman each had two hits. Edman doubled to lead off the eighth and Taylor did the same with two outs in the ninth to bring the tying run to the plate in both situations, but neither could get past third base.
"I thought their pitcher did a great job," said Marquess. "I thought their lefty was really tough. We really didn't have many opportunities. We got a couple of big hits by Slater, but he really baffled us a lot."
Slater extended his career-best hitting streak to 19 games.