SLD76
G.O.A.T.
BS.
Federer is facing against the two toughest rivals(Nadal & Nole) in history. No tier 1 great player has ever have to deal with 2 greater players. Navratilova had only one tier 1 great(Chris Evert), Borg had few great rivals but none are a tier 1 great. Sampras had Agassi but he's a tier 2 great, Serena doesn't have any tier 1 great rival.
You're putting Djokovic in tier 1?