Due to a combination of the venue,
Beijing National Aquatics Center (better known as the Water Cube), which was claimed to be built to increase the speed of the swimmers, and the recently introduced
LZR Racer swim suits, which had been proven to give the swimmer a lower time by 1.9 to 2.2%, some analysts were predicting that many fast times and world records would be set in all the
swimming events. As with almost every event that he entered in at the 2008 Summer Olympics, Michael Phelps was the favorite to win the men's 100 metre butterfly. Since winning the gold medal
at the previous Games, in
Athens, Phelps had demonstrated his superiority in this event, by also becoming world champion
at the Melbourne 2007 World Championships, and achieving victory at the United States Olympic Trials. , seen here in February 2008, was the heavy favorite to win the gold medal. Going into the event, Phelps' compatriot
Ian Crocker was seen as the swimmer with the best chance of beating Phelps. Crocker beat Phelps' 100 metre butterfly world record in
2003, and had since lowered it twice: once at the 2004 United States Olympic trials, and then at the
2005 World Championships in
Montreal. Before the Olympics, Crocker and Phelps held the seventeen fastest times ever in the event. At the
2008 European Championships, Čavić won the men's 50 metre butterfly and was the heavy favorite to win at twice that distance, but was suspended for wearing a "
Kosovo is Serbia" T-shirt on the medal podium. Other possible medal contenders included
Andriy Serdinov of
Ukraine, who had won the Olympic bronze medal in 2004, and
Venezuelan Albert Subriats, a bronze medalist at the 2007 World Championships and seen as a potential spoiler, if he could match or improve on his 51.82 time, in Beijing. ==Competition==