Federer won the first set and had tons of opportunities to take the second, but the Greek kid is pretty clutch and held off all the break points and won the second-set tiebreaker.

It’s been a good Aussie Open. Frances Tiafoe is the lone American man into the quarterfinals. He will likely lose to Rafael Nadal next, but it’s good to see a promising young American make his breakthrough.

The women’s side has been unpredictable, but if Sloane Stephens wins tonight, that’ll guarantee one American into the semifinals because she would play unseeded American Danielle Collins in the quarterfinals. Serena and Madison Keys are both still alive, as well.