In a GOAT debate the AO has to be excluded as too many past greats did not take it seriously. Borg the prime example. McEnroe the other and Connors. As its on hard court it should not prejudice any player to remove it as there is the USO on hard.
The Slam Race at the 3 oldest Majors which encompass the three surfaces is as follows.
1. Nadal 19
2. Federer 14
3. Sampras 12
4. Borg 11
5. Djokovic 9
6. Connors 8
7. Mcenroe 7
8. Lendl 6
9. Agassi4
10. Edberg 4
11. Becker 4
Once recency bias disappears once Big 3 are long retired i think the above list is very accurate of the order of the Open era. Agassi and Djokovic perhaps can leapfrog a couple of spots for having won on each surface.
This is beneath ludicrous, but I'll reply anyway.
Nobody with any sense a) just rips away someone's achievements for no good reason;, and/or b) simply awards titles to players who didn't play in those tourneys.
But, let's look at part B of this equation.
Mac won all his majors from 1979-84, and actually played the AO in '83 (SF). So, he lost realistic chances in 1979-82 and 84.
Borg won all his majors from 1974-81, and skipped 1975-81. So, he lost chances from 1975-81.
Connors won the AO in 1974, and last won a major in 1983, so he had chances in 1976-83.
So, among them, let's say one of them won it every single year they had opportunities (and heck with the guys who actually played and won).
1975 - Borg
76 - Connors
77 -. Borg
78 - Connors
79 - Borg
80 -. Mac
81 - Connors
82 - Mac
83 - Connors
84 -. Mac
New adjusted totals, giving them (and nobody else including those who actually played and won) the benefit of the doubt:. Borg 14, Connors 12, Mac 10.