One punch at a time is not opening up. He never gets into exchanges since he moved to 147. He attempted to throw combos versus berto and looked awkward as hell.
He let his hands go against Hatton, Ortiz, Maidana and Cotto at times, he was aggressive against Mosley.
There's plenty of times where he's exchanged punches, all of the above hit him with hard punches.
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