Slideshow: Hopkins vs. Kovalev Open Workouts

Photos: Will Hart

Sergey Kovalev, Bernard Hopkins and Sadam Ali paid a visit to Gleason's Gym in Brooklyn Tuesday afternoon to perform in a series of open workouts. 

Hopkins and Kovalev face off Saturday on HBO World Championship Boxing, following the completion of Sadam Ali vs. Luis Carlos Abregu. Watch all the action live beginning at 10:45 PM ET/PT on HBO.