Bernard Hopkins and Sergey Kovalev worked out at Gleason’s Gym in Brooklyn on Tuesday, Nov. 4, 2014 ahead of their light heavyweight unification title fight on Saturday at Boardwalk Hall in Atlantic City.

Boxer Sergey Kovalev spars with a partner during a workout at Gleason’s Gym, Tuesday, Nov. 4, 2014. Kovalev fights Bernard Hopkins in a light heavyweight bout, Saturday, Nov. 8 in Atlantic City, N.J.

Boxer Bernard Hopkins talks to reporters before a workout at Gleason’s Gym, Tuesday, Nov. 4, 2014 in the Brooklyn borough of New York. Hopkins fights Sergey Kovalev in a light heavyweight bout, Saturday, Nov. 8 in Atlantic City, N.J. (AP Photo/Mark Lennihan)

Boxer Sergey Kovalev talks to reporters following a workout at Gleason’s Gym, Tuesday, Nov. 4, 2014 in the Brooklyn borough of New York. Kovalev fights Bernard Hopkins in a light heavyweight bout, Saturday, Nov. 8 in Atlantic City, N.J. (AP Photo/Mark Lennihan)

Russian boxer Sergey Kovalev works out during a training session for an upcoming fight against Bernard Hopkins at Gleason’s Gym on Nov. 4, 2014.

Russian boxer Sergey Kovalev stretches after a training session for an upcoming fight against Bernard Hopkins at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins works out for an upcoming fight against Sergey Kovalev at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins works out with Danny Davis for an upcoming fight against Sergey Kovalev at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins looks on during a workout for an upcoming fight against Sergey Kovalev at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins speaks to the media before a workout for an upcoming fight against Sergey Kovalev at Gleason’s Gym on Nov. 4, 2014.

Sergey Kovalev works out with John David Jackson during a training session for an upcoming fight against Bernard Hopkins at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins works out for an upcoming fight against Sergey Kovalev at Gleason’s Gym on Nov. 4, 2014.

Sergey Kovalev works out with John David Jackson during a training session for an upcoming fight against Bernard Hopkins at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins works out for an upcoming fight against Sergey Kovalev at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins looks on during a workout for an upcoming fight against Sergey Kovalev at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins’ trainer Naazim Richardson looks on during a workout at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins speaks to the media before a workout for an upcoming fight against Sergey Kovalev at Gleason’s Gym on Nov. 4, 2014.

Sergey Kovalev performs a workout during a training session for an upcoming fight against Bernard Hopkins at Gleason’s Gym on Nov. 4, 2014.

Sergey Kovalev performs a workout during a training session for an upcoming fight against Bernard Hopkins at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins speaks to the media before a workout for an upcoming fight against Sergey Kovalev at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins speaks to the media before a workout for an upcoming fight against Sergey Kovalev at Gleason’s Gym on Nov. 4, 2014.

Bernard Hopkins looks on during a workout for an upcoming fight against Sergey Kovalev at Gleason’s Gym on Nov. 4, 2014.