Gennady Golovkin vs. Sergiy Derevyanchenko
Gennady Golovkin vs. Sergiy Derevyanchenko
Watch gennady golovkin vs. sergiy derevyanchenko Fmovies. Gennady Golovkin bids to become a world champion again when he takes on Sergiy Derevyanchenko for the vacant IBF middleweight belt.