Katinka Hosszu at 2013 worlds
Courtesy of: Joan Marc Bosch
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PHOENIX, Arizona, July 28. TONIGHT in the Palau Sant Jordi, we saw a world record being chased and an upset of sorts in the men's 400 free relay. In between there were many more exciting races, and we're here to analyze all of it for you on Race Day, sponsored by Speedo!

Jeff Commings is joined by Canadian correspondent Mirko Petrov, and the two talk about everything from Nathan Adrian's illness to Katie Ledecky's 400 freestyle win!