The world No. 1 was clinical in a straight-sets victory, his fourth win in five matches against Fritz, and matched an accomplishment done only by Novak Djokovic and Roger Federer.

The world No. 1 already has a win over the American this week during the round robin stage.

The world No. 1 proved to have too much firepower to set up a Turin rematch with Taylor Fritz on Saturday.

Will both players with undefeated round robin records this week advance to the championship match in Turin?

The Norwegian guaranteed his spot by winning the first set of his final round-robin match against Andrey Rublev, joining Sinner, Alexander Zverev, and Taylor Fritz in Turin.

The two-time champion went undefeated in round-robin play and put Alcaraz on the brink of elimination in Turin on Friday.

He beat all of his Big Four rivals in the season-ending championship, and twice reached the final.

Sinner will be joined in the last four by Taylor Fritz, who rallied from a set down to defeat Alex de Minaur earlier on Thursday.

And if Sinner wins just one set against Daniil Medvedev tonight, Fritz qualifies for the semifinals too.

But just like the other group, nobody has qualified for the semifinals yet—it all comes down to Thursday and Friday.

On Wednesday, we saw some of his best in a 31-winner victory over Andrey Rublev.