(Mike Ehrmann/Getty Images)

It looks like it could be another disappointing season for Miami Marlins slugger Giancarlo Stanton. The MLB home run leader broke a bone in his left hand during Friday’s 7-1 loss to the Los Angeles Dodgers, according to reports by Fox Sports and ESPN.

MLB.com’s Marlins beat reporter Joe Frisaro later confirmed the news on Twitter, noting the injury will require surgery and put Stanton out for at least one month and possibly as much as six weeks.

This is the second year in a row an injury has possibly derailed a potential MVP year for Stanton. The 25-year-old who signed a 13-year, $325 million contract in November, missed 17 games last season when he was hit in the face with a pitch. He finished second to Clayton Kershaw in the National League MVP race.

This season, Stanton has 27 home runs, three ahead of the Nationals‘ Bryce Harper and the Reds’ Todd Frazier for the MLB lead. Stanton’s 67 RBI also lead the majors.

Stanton’s latest injury occurred during his ninth-inning at-bat on Friday.

“On a swing, my bat dug into my hand a little bit and didn’t feel the greatest,” he said (via the Associated Press) after the game. “It got worse and worse.”

“It’s on my hand where I grip the bat, where it rotates in my hand,” Stanton said (via USA Today). “That’s where it was.”

The injury is obviously bad news for the Marlins, who are on a five-game losing streak, but also for the All-Star Game, which is scheduled for July 14 and now will be played without this season’s most prolific slugger.

Stanton, who had missed only one game this season, put up some impressive stats in June, including a .344 batting average, 12 home runs and 23 RBI.