Kepa Arrizabalaga - Pulled off a very strong opening save from Kamaldeen Sulemana and had his work cut out to have any hope of denying James Ward-Prowse's free kick. Made a crucial save after 73 minutes to deny Adam Armstrong. 7.
Cesar Azpilicueta - Chelsea's captain conceded the foul Ward-Prowse scored from with a lumbering foul. Otherwise was fairly solid despite being put under pressure by Southampton's press. Took a nasty knock to the head midway through the second half and had to be replaced. 6.
Kalidou Koulibaly - Picked up an early yellow for a clumsy high foot on Paul Onuachu, and may have been fortunate not to see red. Understandably replaced at the halfway mark after looking close to earning a second yellow during the first 45 minutes. 4.