Frank Lampard keeps faith with the 3-4-3 formation that worked so well at Tottenham on Sunday. The trio of centre-backs are the same, while Emerson replaces Marcos Alonso in the left wing-back role. The Spaniard has a small back problem.

Jorginho is next to N'Golo Kante in the centre of the park, with Azpilicueta to their right. In attack, Hudson-Odoi is joined by Willian and Tammy Abraham.

Chelsea's bench includes Ross Barkley and Pedro.

Danny Ings is on the bench for Southampton, who start with Che Adams and Michael Obafemi up front.

Chelsea: Kepa; Rudiger, Zouma, Tomori; Azpilicueta (c), Kante, Jorginho, Emerson; Hudson-Odoi, Abraham, Willian.

Subs: Caballero, Christensen, Barkley, Mount, Pedro, Pulisic, Batshuayi.

Southampton: McCarthy; Soares, Stephens, Bednarek, Bertrand; Armstrong, Ward-Prowse, Hojbjerg (c), Redmond; Obafemi, Adams

Subs: Gunn, Yoshida, Vestergaard, Romeu, Danso, Boufal, Ings.

Chelsea vs Southampton head-to-head record

In the reverse fixture at St Mary’s on 6 October, the Blues won 4-1 with goals from Tammy Abraham, Mason Mount, N’Golo Kante and Michy Batshuayi. Danny Ings scored for Saints.

Chelsea have won eight and drawn one of our last nine games in all competitions between the teams (eight Premier League, one FA Cup)

Southampton’s last win at Stamford Bridge came in October 2015 when Ronald Koeman was in charge. Willian opened the scoring but goals from Steven Davis, Sadio Mane and Graziano Pelle secured the points for the Saints.

We have met four times on Boxing Day in the Premier League, most famously 20 years ago when we became the first Premier League side to name a starting XI with no British players in a 2-1 win at the Dell.

Biggest league win for each team:

Chelsea 4-0 Southampton 1973/74, 2003/04Southampton 5-0 Chelsea 1968/69Southampton’s biggest league win at Stamford Bridge: 6-2 in 1967/68

Chelsea's festive form

Willian's penalty on Sunday was Chelsea's 100th Premier League goal against Tottenham - in the history of the competition, only Manchester United against Everton (101), Liverpool against Newcastle (101) and Arsenal against Everton (107) have scored more goals against a single opponent.

Chelsea stand fourth with 32 points from 18 matches, six points behind third-placed Man City and four points above newly-promoted Sheffield United in fifth.

The Blues have won six and drawn one of our last seven Boxing Day matches.