Swimmer Chase Kalisz wins 400-meter individual medley; U.S. takes 5 of first 9 swimming medals ESPNFirst swimming upset in Tokyo: Reigning 400 IM world champion fails to reach final Yahoo SportsChase Kalisz earns USA's first gold medal at Tokyo Olympics with 400m IM win | NBC Sports NBC SportsTokyo Rapid-Fire: Day 1 Swimming Headlines SwimSwamChasing Gold: The race for Team USA's first gold at Tokyo Olympics heats up USA TODAYView Full Coverage on Google News