06/29/2011 12:39 pm ET Updated Aug 29, 2011

Charlie Sheen Took Steroids For 'Major League'

As Charlie Sheen was preparing for his late 80s badboy role in the worst-to-first baseball film, "Major League," he was going more method than anyone had previously imagined: while the sport's stars began taking performance enhancing drugs, so did Sheen.

Of course, drug use is barely news with Sheen; after all, his contraband-fueled outbursts made national headlines last fall, and led to, eventually, his dismissal from "Two and a Half Men." Sheen kept his badboy image mostly on film back in his 80s heyday, though, so his admission in this week's Sports Illustrated comes at least semi-unexpectedly.

"Let's just say that I was enhancing my performance a little bit. It was the only time I ever did steroids," Sheen tells the magazine (via NY Daily News). "I did them for like six or eight weeks. You can print this, I don't give a f*ck. My fastball went from 79 [miles-per-hour] to like 85."

In the film, Sheen plays Rick "Wild Thing" Vaughn, a flamethrower with an edge; before joining the Cleveland Indians, he played for the California Penal League. The role required him to cut his hair in a certain lightning bolt-style mullet, and, well, mix the roid rages and that cut, and things didn't always turn out so pretty when he was out in public.

"I didn't like the haircut because it generated so many comments in bars. I've got enough of that already. Add that to the mix, and it's a recipe for a fistfight," he says.

Sheen has continued his love of baseball through the years; during his recent comedy tour, he wore gear from the home team in each city he visited, and is friends with a number of players, including World Series hero Brian Wilson. Last spring, he took batting practice with a number of current and former major leaguers at some college facilities, including at powerhouse UCLA.

He's also friend with admitted steroid user, Lenny Dykstra.