The road was a little roundabout, and a couple of top players nearly fell out of the van along the way, but the ATP Finals will close with a fitting year-end foursome this weekend. Novak Djokovic, Carlos Alcaraz, Daniil Medvedev and Jannik Sinner are ranked No. 1, 2, 3, and 4 respectively, and together they combined to win all four Grand Slams and seven of the nine Masters 1000s in 2023. Saturday’s semifinals—Medvedev vs. Sinner early; Djokovic vs. Alcaraz late—will serve as a proper send-off to this season, and offer an early preview of the next one.

Djokovic vs. Alcaraz obviously comes with an epic recent history, but Medvedev vs. Sinner has an intriguing one as well, as the balance of power between the Russian and the Italian has shifted. Here’s a look ahead at what we can expect from each match.