Put it this way...the gap between Graf and Serena is wider than the gap between Serena and Seles. Yet, you don't want no part in debating Seles vs. Serena but continue to argue for Serena with Graf in goatness. Hilarious.
Tier1(goat): Federer; Tier 1.5: Laver, Gonzales, Sampras, Nadal, Borg;
Tier 2: Lendl, Connors, Rosewall, Tilden; Tier 2.5: McEnroe, Agassi