Devin Hairston added a two-run single in the seventh inning and a run-scoring sacrifice fly in the ninth to help the top-seeded Cardinals earn a win that ultimately didn't matter in the tournament picture. Louisville (47-9) must beat Florida State (36-20) on Friday to advance to face Duke on Saturday in a semifinal.
Matt Vierling hit a two-run double in the third for the 12th-seeded Fighting Irish (26-32), who finished 0-2 in the tournament.
Ellis hit a solo homer in the second for the Cardinals. McKay's blast came an inning later and made it 5-0. Both homers came against Michael Hearne (4-5).
McKay (9-3) allowed three runs and seven hits with eight strikeouts and a walk in six innings.
