Floyd Mayweather is warning Ryan Garcia -- if the 20-year-old boxing star actually steps in the ring with Gervonta "Tank" Davis, "He's gonna get f*cked up." SUBSCRIBE -- http://po.st/TMZSportsSubscribe About TMZ Sports: Some of the best stories in sports have been off the field and we’re reporting on athletes from NFL, NBA, UFC, WWE, MLB and more! Subscribe to TMZ Sports on YouTube for the latest news, exclusive interviews, clips from TMZ Sports on FS1 and videos of your favorite athletes and celebs. Need More TMZ? TMZ Sports Website: http://po.st/TMZSportsWebsite LIKE TMZ Sports on Facebook!http://po.st/TMZSportsLike FOLLOW TMZ on Twitter! http://po.st/TMZFollow FOLLOW TMZ on Instagram! http://po.st/TMZInsta TMZ on TV & TMZ Sports on FS1 Tune In Info: http://po.st/TMZOnAir TMZ is on iOS! http://po.st/TMZiOS TMZ is on Android! http://po.st/TMZonAndroid Got a Tip? Contact TMZ: http://po.st/TMZTip Check out TMZ, TMZ Live, and toofab! TMZ: http://po.st/TMZWebsite Subscribe! TMZ: http://po.st/TMZSubscribe TMZ Live: http://po.st/TMZLiveWebsite Subscribe! TMZ Live: http://po.st/TMZLiveSubscribe Toofab: http://po.st/toofabWebsite Subscribe! toofab: http://po.st/toofabSubscribe https://www.youtube.com/c/tmzsports