Michael Phelps will end his comeback meet with a 100 metres freestyle showdown against Frenchman Fred Bousquet after winning his preliminary heat at the Charlotte UltraSwim Grand Prix in North Carolina.
Returning to competition for the first time since his historic 8-gold medal achievement at last year's Beijing Olympics, the 23-year-old American says he's experimenting with a straight arm windmill style stroke rather than usual bent arm .
Phelps has just ended the longest break of his competitive career.
