Michael Rock beat the greatest swimmer of all time as the Duel in the Pool encapsulated everything about swimming in 2009.
Rock relegated Phelps to second in the 200metres butterfly, something the 22-year-old can celebrate for the rest of his days.
But the Stockport man was wearing a performance-enhancing suit, while the Olympic and world champion was wearing the Speedo 2010 textile-only jammer.