Michael Phelps' coach has announced he could withhold the swimmer from international meets until FINA bans high-tech bodysuits, according to an Associated Press report on Tuesday.
Swimming ruling body FINA has decided to ban the high-tech suits from next year, although the ban now might not come into effect until April or May - three or four months later than expected.
When told of the possible delay, Phelps' coach, Bob Bowman, told the AP reporter that FINA better "do something or they're going to lose their guy who fills these seats."
Bowman spoke immediately after Phelps was upset by unheralded Paul Biedermann of Germany in the 200m freestyle at the world championships.
Biedermann wore a 100 percent polyurethane Arena suit, while Phelps stuck with last year's LZR Racer from Speedo, said the AP report.