Tennis' GOAT is still serving aces.
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Tennis' GOAT is still serving aces.
And he's showing no signs of slowing down.
"Novak will have this in his mind."
Federer's latest Instagram post has delighted fans.
The Swiss tennis champ had nothing but praise for his Spanish rival after the latter's landmark win at the Australian Open.
Federer shares what's been going on since Wimbledon.
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