Lil Wayne will NOT be performing at the Mike Tyson vs. Roy Jones Jr. fight after all -- even though he signed a contract saying he would ... TMZ has learned.
Sources tell us ... organizers for the mega event this weekend had a flight booked for Weezy so he could take the stage Saturday ahead of the fight set to go down at Staples Center in L.A. in just a few hours. We're told LW simply never got on the plane.
Sounds like it was a last-minute cancelation -- we're working on getting more info about why that happened, but in any case .