Mark Wahlberg and his "Entourage" buddies Adrian Grenier, Kevin Dillon and Jerry Ferrara hit the links at the Wilshire Country Club in L.A. on Monday for a great cause - and ET was there! So, who's got the golf goods?

"We're in competition, so I'm gonna take 'em down," said Adrian, who is a relative novice to the game but has discovered he's got a "natural talent." Adrian says the game is all about confidence, but does he think he can beat "head honcho" Mark? "He might have an off day -- I'd take advantage," he said with a smirk.

"[Adrian] literally just started playing, like, five or six months [ago]," said Mark. "It's going to be a good ten years before he gives me a run. But he got the bug. I was so happy that he got the bug because all the other guys on the show play and it's a great game."

"I'm proud to say I got all the guys into it, pretty much," bragged Kevin. "Adrian and Jerry didn't play before the show, so I kind of introduced them to the game a little bit."

"I haven't had the time to play and I was just on the range and it's terrible. Awful. Terrible, like I could hurt someone today, so I'm just going to try not to hurt anybody," said Jerry, aka "Turtle."

The guys got together with other stars including Jack Nicholson, Don Cheadle, Greg Kinnear, "Mad Men" star Jon Hamm and "Desperate Housewives" hunk James Denton to raise money and awareness for The Mark Wahlberg Youth Foundation.

"I cannot be put in this position and forget about where I came from," explained Mark. "We're just trying to create opportunities, especially for at-risk youth. … A lot of people don't have the opportunity to really get a second chance, so we try to create an opportunity for kids. We try to send them to school, try to send them to camp, try to give them positive role models."

For more info, go to http://markwahlbergyouthfoundation.com and iparticipate.org.