But diagrams for more than two or three sets often require circles to be stretched, squeezed and turned in on themselves to cover the increased number of set relationships. (newscientist.com)
The optimum number of sets for maximum growth has always been debated. (ironmanmagazine.com)
At the end of the tournament no two players had played the same number of sets, and all players except the winner had lost more sets than they had won. (newscientist.com)