Golf superstar Phil Mickelson is addressing the rumors that have followed him for years ... coming clean about his gambling problem and opening up on his successful treatment.
Lefty dropped a statement on the matter Monday on social media ... saying while millions of fans will be enjoying their fantasy football season and betting in moderation, he will not -- and it's because his hobby turned into an obsession.
"I wont be betting this year because I crossed the line of moderation and into addiction which isn’t any fun at all," Mickelson said .