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.   14:29 Second set: Rublev 5-5, 3-6 Alcaraz* (*denotes next server) Scoreboard pressure?

Carlos Alcaraz looked little like the player who won two Grand Slams this year in a 6-1, 7-5 loss to Casper Ruud at the ATP Finals

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.