Join Tanya Aldred for updates as Carlos Alcaraz looks to bounce back from his opening defeat by Casper Ruud when he faces the Russian No 8 seed.   12:43 And there is Alcaraz himself, rolling around on a mat in headphones,

(Reuters) - World number three Carlos Alcaraz is unlikely to be at his best for Wednesday's ATP Finals match against Andrey Rublev as the four-times Grand Slam champion continues to struggle with illness, the Spaniard's coach Juan Carlos Ferrero said.

Carlos Alcaraz struggled with a stomach issue and looked far from the player who won two Grand Slams this year in losing to Casper Ruud 6-1, 7-5 at the ATP F