What are some of the most lengthy professional titles?

Sedgman dominated amateur tennis in 1951 and 1952 when there was no Open tennis. There were no lengthy professional tours during those two years, however, and the best professionals played only a few tournaments among themselves. It is arguable, therefore, that Sedgman was the world's best player over that period. In late 1952 Sedgman was tempted to turn professional. Harry Hopman, however, led a fund-raising drive via his newspaper column in the Melbourne Herald to keep Sedgman an amateur. Enough money was raised to purchase a gasoline station in the name of Sedgman's future bride. Sedgman remained an amateur for another year but finally turned professional in 1953 and, according to some sources, became the first tennis player, except, perhaps, for Bill Tilden, to make more than $100,000 in a single year. According to Kramer, Sedgman might have made as much as $150,000 during that tour. He was, however, narrowly beaten that first year by the reigning king of professional tennis, Jack Kramer, 54 matches to 41. It was the closest Kramer came to losing an annual tour, but "still he couldn't beat me. He couldn't handle my second serve, and at the end, that was what saved me." Sedgman was slightly ahead, 18 matches to 17, when he began to have trouble with his shoulder and the flu. Kramer won 17 of the next 19 matches, then, when Sedgman had recovered, split the remaining matches to preserve his edge.