Chris Parmelee's three-run homer off left-handed reliever Jose Mijares broke open a close game in the sixth inning on Saturday, and the Minnesota Twins went on to beat the Boston Red Sox 6-2.
Parmelee hit just .172 against lefties last year. He opened the season as the Twins' everyday right fielder but gradually lost playing time until being sent back to Triple-A at the All-Star break.
The former first-round draft pick is out of minor league options.
The Twins unveiled a $48.5 million renovation of their spring complex. A Hammond Stadium-record crowd of 8,547 was on hand.
Joe Mauer added a run-scoring single in the first for the Twins. He made his 2014 debut at first base after making the permanent move from catcher in the wake of a season-ending concussion last Aug. 19.
Daniel Nava homered for Boston and Grady Sizemore added a hit.