Michael Phelps Is Shirtless, Winning Gold At Worlds (PHOTOS)

08/27/2009 05:12 am ET | Updated May 25, 2011

Michael Phelps is in Italy for this week's FINA World Championships in Rome in top physical shape.

Sunday was the first day of competition, and Phelps and teammates Ryan Lochte, Matthew Grevers and Nathan Adrian won gold for the USA in the 4x100 freestyle relay.

Despite not training for months following his Olympic triumph and partaking in a little well-documented partying, Phelps looks as fit as ever. For the latest Monday swim results go here.

PHOTOS:

Michael Phelps