EXCLUSIVEThe guy who smacked a golf ball off the crotch of NHL star Tyler Seguin has a history of using celeb groins as tees ... in fact, he once took his driver to Anthony Anderson's man-zone ... and we've got the video.
The guy wielding the club is Todd Keirstead -- a trick shot specialist who's been a professional golfer for 19 years.
But before he whacked from Seguin's nether regions at a charity event in Canada this week, Keirstead had proved he could handle the pressure when he tee'd up Anthony Anderson last year.
"There are no nerves" Keirstead says ... "I can't think about anything going wrong."
So far, Keirstead says he's got a perfect record when it comes to the trick shots and hopes to keep it that way ... unlike that Playboy DJ who badly bruised a model's buttcheek when he underswung while trying to tee off out of her ass crack.
Still hurts to watch.