The Italian beat the world No. 1 when the two met in group play, but can he take the GOAT down twice in one week?

Our best bets for these incredible semifinals are in.

While Medvedev has already booked his spot in the semis, Alcaraz can win to join him. That makes it hard not to like the Spaniard.

Sinner is coming off the biggest win in his career, but he has never beat Rune—who also has a lot to play for.

This match feels like a coin flip, so I’m taking the underdog—who just so happens to be a two-time ATP Finals champion.

The Italian will have the crowd behind him, but Djokovic is 4-0 in this head-to-head series—and relishes the villian role.

This has been a one-sided rivalry over the years and it's unlikely that much will change when the two battle it out in Turin.

Sinner won their last meeting in straight sets, but Tsitsipas had dominated the head-to-head before that.

Here's how to spend your gambling dollars during the season-ending championships.

Swiatek was our pick to win the tournament at +260 before it started. The Pole is now a heavy favorite to beat Pegula in the final.

Dimitrov has played some incredible tennis this week, but he happens to be running into one of the hottest players on the planet.