I came across this tidbit of information while researching some facts in another thread. Jimmy Connors was the first person to win a slam on 3 different surfaces and the only person to win the same slam (US Open) on 3 different surfaces! This is pretty cool, IMO. He won the US Open in: 1974 (grass) 1976 (HAR-TRU or "American clay") 1978 (DecoTurf) In 1975, the surface of the USO changed from grass to clay (HAR-TRU). Then, in 1978, it changed from clay to the current DecoTurf.