Drug test issue could doom showdown

Hard-hitting Pacquiao baulks at proposal from Mayweather's camp

LOS ANGELES: A dispute over doping test rules for the planned showdown between Manny Pacquiao and Floyd Mayweather has jeopardized the long-awaited welterweight showdown, promoters claimed on Tuesday.

It's uncertain, however, whether the testing issue is simply an over-hyped negotiating ploy aimed at Pacquiao or truly a deal-breaker that could scuttle a fight with the potential to be the biggest boxing moneymaker of all time.