Berlin - US swim star Michael Phelps had no problems reaching three more World Cup finals on Sunday, a day after his double triumph here, as the 14-time Olympic champion continues building up for London 2012.
Having won the 100m and 400m individual medley finals on Saturday evening, the 26-year-old came through the Berlin heats for the 100m butterfly, 200m individual medley and 200m backstroke to reach the finals on Sunday evening.
"I'm here to test out myself. So far, I can be satisfied," said Phelps, who was second fastest through the heats in the butterfly and individual medley and only fourth in the backstroke.
Phelps won eight gold medals at the 2008 Beijing Olympic Games and six at Athens in 2004, but has not said yet how many medals he will race for at the London Olympics which start in July with the US trails to be held in June.
Germany's Olympic champion Britta Steffen qualified for the 100m freestyle final in a disappointing sixth while compatriot Daniela Schreiber was the fastest in the heats.
US teenager Melissa Franklin, 16, who set the 200m backstroke world record here on Saturday, was the second quickest.
World 200m freestyle record holder Paul Biedermann was the fastest into Sunday's final in a time of 1 minute 44.85 seconds, having won the 400m freestyle the day before.