I wonder if the controversial ATP ranking of 1977 may have affected emotionally to Guillermo, and his motivation to keep training hard and trying to adapt to the hard surfaces, and simply his confidence in general in all the rest of his career. What do you think about that? Was the ATP rankings very important at that time? Or it was more important the World Tennis magazine rankings? His performance in 1978 was not so good, but maybe he just relaxed and I'm paranoid. I found this statement of Guillermo in 1977: "I knew it would be like this, I'm South American, I come from a part of the world that matters little to the great owners of tennis. But I know I'm the best, I proved it in the court, and no one takes me that" I know hard surfaces was not Vilas favorites courts, but he had had enough good results to date. He could have done it better at the U.S. Open and the Masters between 1978 and 1981? I do not know if he could have won, but maybe reach larger instances in those tournaments. Some examples: 1974: Champion in Canada(hard) 1975: Runner up in San Francisco(Indoor/Carpet) and semifinalist in the Masters. 1976: Champion in Sao Paulo(Outdoor/Carpet), Canada(hard), semifinal in the Masters.Runner up in Dallas WCT(Indoor/Carpet)and Sao PauloWCC(Indoor/Carpet), the both losing to Borg in very good matches. 1977: Champion in Springfield(Indoor/Carpet), Virginia Beach(Outdoor/Hard) and Johannesburg WCT(Outdoor/Hard) Runner up in Palm Spring(Outdoor/Hard) and Baltimore(Indoor/Carpet) Semifinalist in the Masters when he beat Connors in the Round Robin. He played better on clay, but he was not doing badly in those years on hard surfaces. What do you think? Or maybe the surface of the US Open was different? I did not experience the time, but I am a fan. I wonder it also because also he said that "to try to win on this surface he would have to vary so much in his style, which was not worth trying" Do you think if ATP had been recognized as number one he would have more motivation to try to defend his title in the US Open, and in all his career? Maybe I'm just imagining things? What do you think? Thanks for reading! I am a hug Vilas fan.