Michael Phelps won the 200-meter individual medley Thursday for his first individual gold of the London Games, becoming the first man to win the same indvidual event in three straight Olympics. Phelps, who won the 4x200 relay earlier, clocked 1 minute, 54.27 seconds in the 200 IM for his record 20th career Olympic medal and 16th gold. He had failed to complete a threepeat in two previous events, the 200 fly and the 400 IM.