Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
The 1972 United Bank Classic, also known as the Denver WCT, was a men's tennis tournament played on indoor carpet courts in Denver, Colorado in the United States that was part of the 1972 World Championship Tennis circuit. It was the inaugural edition of the tournament and took place from April 24 through April 30, 1972. First-seeded Rod Laver won the first edition of both the doubles and singles competition. There was criticism by players, including Arthur Ashe, that the playing conditions on the Sporface carpet courts were too fast.
"Surface fast, action slow in Denver tennis". Poughkeepsie Journal. April 25, 1972. p. 18 – via Newspapers.com. We have been asked to bear with it just this year", Ashe said of Denver. "At sea level it works okay, but in Denver the ball flies just too fast. Taylor said the surface was "entirely too fast and it's time we got rid of it.
Rod Laver
Marty Riessen, 4–6, 6–3, 6–4
Cliff Drysdale / 
Roger Taylor, 1–6, 6–4, 6–3