Chelsea showed they can thrive without Romelu Lukaku as Kai Havertz scored after replacing the axed Belgium striker for the 2-0 Champions League last-16, first-leg win against Lille on Tuesday. Thomas Tuchel's side took control of the tie thanks to Havertz's first-half header and Christian Pulisic's clinical finish after the break at Stamford Bridge. The holders will expect to complete their progress to the quarter-finals when they travel to France for the second leg on March 16. But Chelsea's sixth successive win in all competitions was more a referendum on their Lukaku conundrum than an indication of their chances of retaining the trophy.