SHANGHAI (AP) — The semifinals of the Shanghai Masters will be a family affair.

The 30-year-old Arthur Rinderknech eased past Felix Auger-Aliassime on Friday for the biggest win of the Frenchman’s career and followed his cousin Valentin Vacherot into the final four of the tournament.

It will be a first Masters 1000 semifinal for either of them with the cousins potentially meeting in the final. No. 204-ranked qualifier Vacherot faces Novak Djokovic next, and Rinderknech plays 16th-seeded Daniil Medvedev.

Vacherot, who had stunned 10th-seeded Holger Rune the day earlier, was watching courtside as Rinderknech showed little sign of nerves in his first Masters 1000 quarterfinal, securing a dominant 6-3, 6-4 victory over World No. 13 Auger-Aliassime after 87 minutes.

“It is huge. First of

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