Michael Phelps scraped into a 400m medley showdown with Ryan Lochte and South Korean hero Park Tae-Hwan was disqualified then reinstated on a turbulent opening day of Olympic swimming competition on Saturday Park, whose 400m freestyle victory in Beijing was South Korea’s first Olympicswimming gold, touched first in his heat but was stunned tolook up and see the scoreboard showing he was disqualified.u00a0

Michael Phelps competing in London yesterday. Pics/Getty Images