Open Era records
Most singles titles won after turning age 30: Rod Laver - 40 titles (including 1969 Grand Slam). Last title at age 36 in Orlando 1975.
Oldest player to win a singles title: Richard Alonso "Pancho" Gonzales - (43 years 273 days Des Moines - 1972)
Oldest No.1 player: Andre Agassi (33 years, 4 months in 2003)
Oldest player to end a year in the Top 10: Richard Alonso "Pancho" Gonzales (41+ years in 1969)
Oldest players to win Australian Open:
1. Ken Rosewall - 1972 (37y 2m 1d)
2. Ken Rosewall - 1971 (36y 2m 12d)
3. Andre Agassi - 2003 (32y 8m 28d)
Oldest players to win Roland Garros:
1. Andres Gimeno - 1972 (34y 10m 1d)
2. Ken Rosewall - 1968 (33y 7m 7d)
3. Rod Laver - 1969 (30y 9m 30d)
Oldest players to win Wimbledon:
1. Arthur Ashe - 1975 (31y 11m 25d)
2. Roger Federer - 2012 (30y 11m 0d)*
3. Rod Laver - 1969 (30y 10m 26d)
Oldest players to win US Open:
1. Ken Rosewall - 1970 (35y 10m 11d)
2. Rod Laver - 1969 (31y 1m 0d)
3. Pete Sampras - 2002 (31y 0m 27d)
Most singles titles:
1. Jimmy Connors - 109
2. Ivan Lendl - 94
3. John McEnroe - 77
4. Roger Federer - 76*
* Still active
In the video elsewhere in this thread where Roger Federer mentions thoughts of winning 100 titles, he has also stated that he likes longevity and accomplishments associated with it, pointing to Jimmy Connors 20 years in the game as an example. His achievement this year of winning Wimbledon and returning to #1 in the world at age 30-31 with his younger competition in their prime is remarkable. We have discussed elsewhere in this thread that Federer has many of the qualities that support longevity in tennis.
If he keeps somewhere near his current level of play (top 4), then he definitely can put himself in a position
to win more majors as well as more titles. That's all that can reasonably be expected. Whether he can or will win more majors will be dependent on how well and for how long he can keep somewhere near this level, how well his main competition continues to perform, and some amount of luck. Given his current level and competition, it would surprise me more if he never wins another major than if he were to win 1-3 more, but who knows?
Starting Jan 1, 2013, he is free to play in whichever tournaments he wishes as he will have fulfilled all 3 requirements to be exempt from the ATP tour Masters 1000 commitment. He can skip tourneys that don't favor him and opt to play in others that do, even if they may be "lesser" tournaments. He has a family and health considerations, but the family seems to enjoy the traveling and tennis as much as he does. He might not play 15 more years
, but as long as he stays relatively healthy and his family needs are no obstacle, another 5-10 years on the tour wouldn't shock me.
In the end, we can speculate one way or another, try to estimate how many titles/year he can win, etc., but who knows what will happen? In 2012, I think most people have been surprised that he has won 6 titles including 3 masters 1000s and Wimbledon so far, with the indoor season still to go. At the end of 2012, let's see where he is and how we did with our predictions very early in this thread.