Norway's third seed Casper Ruud downed ATP Finals debutant Felix Auger-Aliassime 7-6(4) 6-4 on Sunday to kick-start his round-robin campaign in the season-ending tournament.

Casper Ruud downs debutant Felix Auger-Aliassime in ATP Finals opener

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Casper Ruud downs debutant Felix Auger-Aliassime in ATP Finals opener