SHANGHAI, China (Reuters) -Frenchman Arthur Rinderknech produced a commanding performance to upset Canadian 12th seed Felix Auger-Aliassime 6-3 6-4 in the quarter-finals of the Shanghai Masters on Friday, joining his cousin Valentin Vacherot in the semis lineup.

Rinderknech’s win came a day after Vacherot, ranked 204th in the world, shocked Danish 10th seed Holger Rune to become the second-lowest ranked player ever to reach an ATP Masters 1000 semi-final.

Their fairytale run has set the stage for a potential family showdown, though four-times Shanghai champion Novak Djokovic, looms large in Vacherot’s path.

“First of all, I follow my cousin. He’s going through the emotions, and I’m trying to battle to follow and do as good as him,” Rinderknech said, as Vacherot cheered him from the stan

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