At the 2009 National Championships, Knutson qualified to swim in the 4x200 m freestyle relay at the 2009 World Aquatics Championships in Rome by placing fifth in the 200 m freestyle.
2009 | World Cup | FIFA World Cup | World Trade Center | World Series | 2010 FIFA World Cup | World Bank | World Health Organization | Guinness World Records | 1978 FIFA World Cup | World Series of Poker | Allies of World War II | BBC World Service | ATP World Tour 250 series | World Heritage Site | World Boxing Association | World Boxing Council | 2006 FIFA World Cup | World Wide Web | As the World Turns | World Trade Organization | The Championships, Wimbledon | ATP World Tour 250 Series | World Rally Championship | World Intellectual Property Organization | World Economic Forum | Western world | Miss World | Rugby World Cup | World Meteorological Organization |
One notable example of the efficacy of this suit design is that of Paul Biedermann of Germany who wore the suit in the 2009 World Championships, breaking two world records.