Photo: Noah K. Murray, USA TODAY Sports
Miguel Cotto (39-4, 32 KOs) won the WBC middleweight title Saturday night when Sergio Martinez retired on his stool after the ninth round at Madison Square Garden.
Cotto , a former champion in three weight divisions, dominated Martinez from the start and won a title in his fourth weight class, making him the first Puerto Rican to accomplish the feat.
Sergio Martinez (51-3-2, 28 KOs) had trouble with his knee and was knocked down three times in the first round and four altogether.
Miguel Cotto stops Sergio Martinez with ninth-round TKO:
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