Tyler Peyton limited Oregon to one run in 7 1-3 innings to help second-seeded Iowa beat the third-seeded Ducks 3-1 on Friday in their NCAA regional opener.
Peyton (7-4) struck out five and didn't walk a batter to help the Hawkeyes (40-16) win for the first time in NCAA tournament play since the 1972 College World Series.
Iowa had baserunners in every inning but the first. Nick Day's RBI single in the second inning put the Hawkeyes in front, and Nick Roscetti added RBI groundouts in the third and fifth innings.
Iowa stranded 13 men on base and left the bases loaded in three innings.
Oregon (37-24), making its fourth consecutive NCAA appearance, was limited to a third-inning RBI single from Austin Grebeck. Phil Craig-St. Louis went 2 for 3.
On Saturday, Iowa will face the Missouri State-Canisus winner. Oregon will play the loser.
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