"He made a mistake and now he's going to have to pay for it," Twins general manager Terry Ryan said. "It's too bad. I hate to see that happen. It takes away valuable time for anybody when you lose 50 games in the season. That's quite a bit."
The 24-year-old Gallant split last year between Rookie-level Elizabethton and Cedar Rapids, going a combined 3-1 with a 5.47 ERA over 22 appearances. He struck out 36 batters in 26 1/3 innings, an average of 12.3 strikeouts per nine innings.
Gallant was selected by the Twins in the 23rd round of the 2010 First-Year Player Draft and has spent three years in Minnesota's system, none of them above Class A ball in the Midwest League. Overall, he has gone 6-1 with a 3.49 ERA, 73 strikeouts and 30 walks in 56 2/3 innings.
Adam Berry is a reporter for MLB.com. Follow him on Twitter at @adamdberry. This story was not subject to the approval of Major League Baseball or its clubs.