Casper Ruud’s first victory over Alcaraz in 5 career meetings could make it difficult for the Spaniard with Germany’s Zverev on a hot streak.

An off-colour Carlos Alcaraz suffered a shock 6-1 7-5 defeat against Norway's Casper Ruud in his opening match at the ATP Finals as the Spaniard's hopes of winning the year-end title for the first time suffered a blow on Monday.

Shaboury for updates as Carlos Alcaraz and Casper Ruud open this year’s John Newcombe Group at the ATP Finals in Turin.   14:31 *Alcaraz 1-6, 5-6 Ruud (*denotes server) The Spaniard hits a pacy first serve and the crowd cheers him on but he then attempts another drop shot,