Swansen blasted a three-run homer in the first inning, his second of the tournament, before finishing a triple shy of the cycle. He drove it to the wall, past a diving Mitchell Okuley in right field, to score Ben Columbus from first — for his second straight game with a double and a homer.
Columbus also homered for Nebraska for a 6-3 lead in the fifth, and he was walked three times.
Swansen hit a grounder past a diving shortstop with the bases loaded in the seventh, scoring two to make it 9-3.
McConnaughey picked up his eighth victory of the season after going six innings.
Colin Purcell allowed five runs in 2 2/3 innings for his third loss of the season for Ohio State (29-26).
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AP college sports: https://apnews.com/hub/college-sports