WBA middleweight champion Gennady Golovkin (31-0, 28 KOs) scored his 18th consecutive knockout when stopping Marco Antonio Rubio (59-7-1, 51 KOs) on Saturday night at the StubHub Center, in Carson, California.
The Kazakhstan-born fighter punished Rubio thoughout landing 28 power punches in just over four minutes, ending the bout with a crushing left hand blow just 79 seconds into the second round.
In the first round, Golovkin began teeing off on Rubio with some really big punches,…