The matchup between MacEnroe and Borg was great because of the contrasting, complementing styles and characters: the quiet, athletic baseliner vs. the volatile, magic serve-and-volleyer. The same mixture was in the Martina-Chris matchup. As Kevin said, the Laver-Rosewall matches put pro tennis on the map. Alongside the Dallas-match in 1972, which drew 25 millions tv recipients, there was an important Wimbledon match in in the pro event in 1967, which Laver won 6-2,6-2,12-10. It was a great success at the gates and the tv ratings and opened the door to open tennis in 1968. It's sorry, that some of their best matches, when both were in their prime, were played on the pre open pro tour without any tv exposure or film documentation. There were great 5 setters at Paris 1963, which Rosewall won, at Wembley 1964 and Boston 1966, which Laver won in the 5th. Arthur Ashe always stated , that the best match he had seen, was the Laver-Rosewall final at the Los Angeles South West Pacific open in 1968, which Laver won over Rosewall 4-6,6-0,6-0.