At the 2003 World Championships in Barcelona he split a 46.70 in the medley relay which stood as the fastest 100 m freestyle split until it was topped in 2008 by the French relay veteran Frédérick Bousquet, at 46.63 seconds. Van den Hoogenbands' 46.70, however, remained as the fastest textile relay split until it was topped in 2015 by Cameron McEvoy of Australia. He had disappointing performances in both the 100 and 200 freestyle events though, finishing runner up to Alexander Popov and Ian Thorpe respectively, with considerably slow times. His times from previous meets in the past year, and earlier rounds of the championships, would have won both events. His winning time in the 200 freestyle at the 2002 European Championships was faster than Ian Thorpe's winning time at these Championships, but Pieter went about 2 whole seconds slower this time around. His time in the semis of the 100 freestyle at these Championships would have won the final of that event as well (won by Alexander Popov), and his 100 free relay split (with nearly a second gain from a rolling start) was 2 whole seconds faster.