Gennady Golovkin on moving weight classes to fight Sergey Kovalev
On SI Now, WBA and WBO middleweight champion Gennady Golovkin discusses the possibility of moving up weight classes to fight Sergey Kovalev.

On SI Now, WBA and WBO middleweight champion Gennady Golovkin discusses the possibility of moving up weight classes to fight Sergey Kovalev.
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