From a historical standpoint, the 1969 Grand Slam was his outstanding achievement, because of the open enviroment with all the older pros and amateurs of the 60s and a whole generation of younger stars (Newk, Roche, Ashe, Okker, etc.) contending. In the new book '40 years of US Open' (besides a fine, well illustrated book with a video of legendary US Open players), Laver stated, that he felt at age 31, that 69 would be his first and last chance to win an open Grand Slam. Maybe his best match was the 1968 Los Angeles final over Rosewall 4-6,6-0,6-0. But his peak year probably was 1967, when he won 19 titles overall and all important pro titles, including the only Wimbledon pro and the other pro majors. And the pros had received fresh blood in 1967, with Stolle (Nr. 1 amateur 1966) and Ralston coming from the amateur ranks.