(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 had his drop shot working and overcame physical issues to claim a 6-3, 7-6 victory over Andrey Rublev at the ATP Finals.

The ATP Finals’ organizers have already published the order of play for Day 6: Alcaraz and Zverev will face each other in the day session, while Ruud and Rublev will clash in the night session.