Rachel Whiteread's coloured circles juggle the Olympic rings but also draw on the marks left by cups and glasses on tables - she gives an everyday human warmth to the subject.
Michael Craig-Martin's is perhaps the most striking - vivid colour with a stark, exhilarating message. But for sheer visual pleasure and clarity, Howard Hodgkin's Swimming, a tumble-turn captured in a few swathes of sumptuous blue, wins the day.