Robert Sanchez (5/10):
While he made some nice-looking stops, his parries or punches didn't really clear the danger. Perhaps could have done better for Atalanta's second, despite the deflection.
Trevoh Chalobah (6/10):
The makeshift right-back picked up a first-half yellow card, and as a result, he was withdrawn at the interval. Didn't do much wrong, though.
Josh Acheampong (7/10):
Pulled off a brilliant last-ditch tackle to deny what would have been a certain goal from Lookman from close range and then timed a wonderful sliding tackle to frustrate the former Fulham man again in a first half full of maturity.
Benoit Badiashile (5/10):
Seemed to be doing a decent job, but he was part of a defence that conceded two soft goals as he stood off De Ketelaere for Atalanta's second.
Marc Cucurella (5/10):
The Spain international covered so much ground for his side and was often seen high up the pitch even when Chelsea didn't have the ball. But he didn't close down De Ketelaere quickly enough and paid the price.