Martinez retains title with fourth round with spectacular kayo
After finding his range easily in round one, Martinez peppered Munguia with an assortment of clean punches. Toward the end of round two, Munguia stepped up his punch output and engaged in several heated exchanges with Martinez.
Martinez got the better of Munguia in round three, landing the sharper, more precise punches. Munguia landed some heavy shots, but Martinez had a higher connect rate. Both men traded blows non-stop for the last minute and a half of the round.
In round four, Martinez seriously injured Munguia with rights to his body and head. Then, Martinez dropped Munguia with a potent right uppercut. Munguia was unable to beat the ten count, as the official time of the knockout was 1:48.