Mark Foster drew on his vast experience by refusing to be distracted by the zip popping on his swimsuit just before the final of the 50 metres freestyle and going on to qualify for his fifth Olympics at the trials in Sheffield.

Mark Foster went on to qualify for his fifth Olympics at the trials in Sheffield.

Mark Foster drew on his vast experience by refusing to be distracted by the zip popping on his swimsuit just before the final of the 50 metres freestyle and going on to qualify for his fifth Olympics at the trials in Sheffield.