Edited sentence: After the race, Phelps' coach, Bob Bowman, threaten to withdraw Phelp's from international competition because Bowman claimed Biedermann had an unfair advantage because Biedermann was wearing a full polyurethane swim suit, known to improve times by 2-3 percent.Bowman said, "It took me five years to get Michael from 1:46 to 1:42 and this guy has done it in 11 months.I'd like to know how to do that.That's an amazing training performance