SPORTS
09/26/2014 01:36 pm ET Updated Sep 26, 2014

Floyd Mayweather And Manny Pacquiao Are Fighting ... On Twitter

Gabe Ginsberg via Getty Images

Floyd Mayweather Jr. and Manny Pacquiao may never trade actual punches, but the social media sparring is well underway.

Two days after Pacquiao took shots at Mayweather and his apparently fictionalized reality Showtime series on Twitter, Mayweather fired back with a tweet and Instagram post:

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