Morneau became the fourth Twins player to hit three home runs in a game. Minnesota hit six in all in the nightcap to complete the sweep in which they scored 32 runs and rapped out 36 hits.
In the second game, Morneau hit a three-run drive in the first, a solo shot in the third and a two-run homer in the seventh. He has 23 homers on the year. That put him alongside Bob Allison, Harmon Killebrew and Tony Oliva as the only Twins to hit three in a game. Morneau flied to left in the eighth, falling one shy of the major-league record.
Torii Hunter added a solo shot in the third after going deep in the first game. Michael Cuddyer hit a solo homer in the fifth and Jeff Cirillo pinch hit a three-run homer in the seventh.
This came after a day game that featured more runs than any contest in more than eight years.
The 34 runs were the most since 1999, when Cincinnati beat Colorado 24-to-12, according to the Elias Sports Bureau.