It is said by those who saw him that he was such a fierce competitor that he makes Jimmy Connors look like a *****cat in comparison. Think about that for a second.
It has also been said that he never lost serve whilst serving for the set or match. He was the World No. 1 professional tennis player for an unequalled eight years in the 1950s and early 1960s.
A 1999 Sports Illustrated article about the magazine's 20 "favorite athletes" of the 20th century said about Gonzales (their number 15 pick): "If earth was on the line in a tennis match, the man you want serving to save humankind would be Ricardo Alonso Gonzalez." American tennis commentator Bud Collins echoed this in an August 2006 article for MSNBC.com: "If I had to choose someone to play for my life, it would be Pancho Gonzales."
He also had great longetivity and as a 41-year-old at Wimbledon in 1969, Gonzales met Charlie Pasarell, a Puerto Rican younger than Gonzales by 16 years.
Gonzales fought back from 2 sets down to win an epic encounter 22-24, 1–6, 16-14, 6–3, 11-9. Gonzales saved all seven match points that Pasarell had against him in the fifth set, twice coming back from 0-40 deficits, to walk off the court the eventual winner in a 5-hour, 12-minute epic.
Here is a YouTube video about the incredible Pancho Gonzales: http://www.youtube.com/watch?v=Nd0gJzm_EQY