Challenge accepted, says Santiago Ponzinibbio . The veteran UFC welterweight has issued his response to Bryan Barberena’s recent callout on The MMA Hour . Barberena (18-8 MMA, 9-6 UFC) is fresh off a TKO win over former champion Robbie Lawler and made it clear he wants to fight Ponzinibbio (28-6 MMA, 10-5 UFC) next. But the callout wasn’t spontaneous.
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