Michael Fred Phelps II (born June 30, 1985 in Baltimore, Maryland) is an American swimmer and World Record Holder in several events. Phelps' achievements include a record of eight medals at the 2004 Summer Olympics in Athens, six of which were gold, tying the Olympic record for medals at single Olympics, held by Alexander Dityatin since 1980. Phelps's international titles, along with his various world records, have resulted in him being named World Swimmer of the Year four times in 2003, 2004, 2006 and 2007.