Retaining titles will put Gennady Golovkin on par with this legend

It has been lost in the noise and the sheer effort to fight on Cinco de Mayo, but Gennady "Triple-G" Golovkin will be trying to tie a boxing milestone Saturday night when he puts up his middleweight titles against challenger Vanes "The Nightmare" Martirosyan at StubHub Center in Carson, Calif. Golovkin (37-0-1, 33 KOs) is...