The Turn up was real over the weekend after the Floyd Mayweather fight. Rapper Lil Wayne almost had his own boxxing match with Marcos Maidana's trainer.
Wayne -- who was part of Floyd Mayweather's entourage -- was leaving the ring at the MGM Grand when in the chaos that ensued following the fight, someone threw a bottle that struck the rapper on the shoulder.
We're told ... Wayne believed the bottle-thrower was a member of Maidana's entourage (the fighter's trainer) -- who was following close behind -- and Weezy immediately tried to confront the guy to fight it out.
You can see in the video ... a member of Wayne's entourage grabbed the rapper and kept him from getting into it ... though it's clear, Weezy was heated.
At one point, you can hear Wayne scream at Maidana's camp, "Let's GO, n***a!" Ultimately, both sides were separated without further incident.
Watch the incident transpire below.