Costa and Hazard on fire for Chelsea in title-boosting win over Southampton — in pictures

Chelsea midfielder N’Golo Kante during the warm-up. John Sibley / Reuters

Southampton players huddle together just before kick-off. Alastair Grant / AP Photo

Chelsea forward Eden Hazard rides a challenge from Southampton midfielder Oriol Romeu. Alastair Grant / AP Photo

Eden Hazard celebrates scoring the opening goal for Chelsea. Alastair Grant / AP Photo

Chelsea wing-back Marcos Alonso wins an aerial duel with vies with Southampton full-back Cedric Soares. Justin Tallis / AFP

Southampton players celebrate with Oriol Romeu after his equalising goal. John Sibley / Reuters

Chelsea captain Gary Cahill celebrates after scoring his team’s second goal. John Sibley / Reuters

Chelsea striker Diego Costa scores a goal his first goal and his team’s third. Alastair Grant / AP Photo

Diego Costa celebrates with teammates after scoring to give Chelsea a 3-1 lead. Clive Rose / Getty Images

David Luiz celebrates by swinging on the crossbar after Gary Cahill’s goal. Alastair Grant / AP Photo

Diego Costa celebrates with Nemanja Matic, left, and Marcos Alonso after scoring Chelsea’s fourth goal. Justin Tallis / AFP

Chelsea’s club captain John Terry receives his instructions from manager Antonio Conte before his substitute appearance. Glyn Kirk / AFP

Chelsea manager Antonio Conte celebrates with Diego Costa after the final whistle. John Sibley / Reuters

The best photos from Tuesday night at Stamford Bridge where Chelsea defeated Southampton 4-2 in the Premier League. Goals from Eden Hazard, Gary Cahill and two from Diego Costa ensured Chelsea stretched their lead at the top of the table to seven points ahead of Tottenham Hotspur’s trip to Crystal Palace on Wednesday. Oriol Romeu and Ryan Bertrand, both former Chelsea players, got the goals for Southampton.

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