Mayweather outdid himself, financially, with his May 2015 win over Pacquiao. Their pound-for-pound showdown aired as a joint PPV venture between Showtime and HBO, and remains by far the highest-grossing event in boxing history on every level – live gate, PPV revenue, units sold, sponsorship generated and closed-circuit ticket sales. He bowed out of the sport four months later, following his 49th career win in a lopsided decision over Andre Berto.
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