"Since Richard has a one-handed backhand, I like it. I like to see one-handed backhands in the Masters," a smiling Federer said about one trait he shares with Wawrinka and Gasquet.
The 17-time Grand Slam champion was not surprised by fellow Swiss Wawrinka's good season.
"Physically we know how tough he is," Federer said. "I think it was important for him mentally to show the players and the press, I guess, and the critics, that he can hang tough with the best guys and do it on all surfaces."
Wawrinka won the Portugal Open and had three runner-up finishes while Frenchman Gasquet clinched three titles this year. They also both reached the semifinals of the U.S. Open.
"Going to London is not a normal thing," Wawrinka said. "You need to have an exceptional year. This year I had very good results to be able to compete for this. What changed this year is that I really tried to enjoy my victories more."
Wawrinka beat Nicolas Almagro of Spain 6-3, 6-2 in Paris on Thursday to reach the quarterfinals while Gasquet defeated Kei Nishikori of Japan 6-3, 6-2.