LONDON (REUTERS) - Goals in each half from Kai Havertz and Christian Pulisic earned defending champions Chelsea a solid 2-0 last-16 first-leg victory over Lille in the Champions League on Tuesday (Feb 22), but the London side will be concerned about injuries to key players.

Havertz, who had already had two attempts on goal early in the game, headed down a Hakim Ziyech corner in the eighth minute and the ball bounced high off the turf into the net.

Chelsea left struggling striker Romelu Lukaku on the bench and it was Pulisic who hit the second in the 63rd minute with a curling finish after N'Golo Kante's surging run and pinpoint pass.

Ligue 1 champions Lille, who topped their qualifying group ahead of Salzburg, VfL Wolfsburg and Sevilla, kept Chelsea busy going forward with buzzing runs from Renato Sanches, Benjamin Andre and Jonathan Bamba.

But efforts from all three and from Canadian striker Jonathan David were either blocked, usually by defensive rock Thiago Silva, or collected easily by Edouard Mendy in the Chelsea goal.

Chelsea, who face Liverpool in the League Cup final on Sunday, may be satisfied with taking a two-goal lead to Lille for the second leg on March 16. But they will be concerned for the fitness of pivotal midfielder Mateo Kovacic and of in-form Ziyech who both limped off early in the second half.