The Weinstein Company

After looking at the first still of Jake Gyllenhaal in the upcoming movie Southpaw, our jaws are on the floor!

After losing a reported 30 pounds to play a deliciously creepy videographer in Nightcrawler, the 33-year-old actor has put on a solid 15 pounds of muscle for his role in the Antoine Fuqua-directed flick.

Gyllenhaal plays Junior Middleweight Champion Billy “The Great” Hope, a left-handed fighter who ends up losing more than just boxing matches when he's hit with a personal tragedy.

"I’m so pumped, man," Fuqua said to Deadline when asked about working with the star. “Jake is going to change how people see him. I had him training twice a day in the boxing ring, he did two-a-days seven days a week. I pretty much had him with me and my trainer every day. I took him to almost every fight. I had him train at Floyd Mayweather’s gym in Vegas and we watched Floyd’s fights, and the Manny Pacquiao fight. He trained in New York at Church Gym with real fighters. We literally turned him into a beast."

Fuqua added, "I think he broke up with his girlfriend because he was just in the gym every day. He was training like a fighter. I had him sparring, really getting hit. I put him in situations where I wanted to see what he was made of. No one but fighters understand the sacrifice it takes to be a fighter."

Wait, so he's single now too?!