The US Open is down to its final four.

Ben Shelton pulls off the biggest win of his career against Carlos Alcaraz, Frances Tiafoe survives an epic five-set comeback, and Alexander Zverev suddenly looks like the man to beat. We break down the men’s semi-finals, with Shelton facing Tiafoe and Zverev taking on the resurgent Karen Khachanov.

On the women’s side, the top four seeds remain. Sabalenka meets Pegula, while new world No.1 Rybakina faces an in-form Gauff.

Plus, we discuss what Alcaraz’s US Open return reminded us about his importance to tennis, Tommy Paul’s fascinating tactical comments about Carlos’ evolving game, and make our picks for all four semi-finals.