Sehrou Guirassy regarded as if he had secured some extent for his facet with an equaliser minutes earlier, however Giroud profited from some poor Rennes defending to say the win after Callum Hudson-Odoi had put the guests in entrance within the first half.
Chelsea prime Group E with 10 factors from 4 video games, degree with Sevilla however forward on goal-difference, after the Spanish facet additionally claimed a late 2-1 victory in Russia towards Krasnodar to seal their passage into the knockout phases.
Rennes, who’ve one level, had their moments however have been largely saved at bay by Chelsea goalkeeper Edouard Mendy, who left the Brittany membership for Stamford Bridge in September and made a lot of excellent saves.
The guests ought to have gone in entrance inside 4 minutes as Timo Werner inexplicably blasted over from close-range with the objective gaping.
Hudson-Odoi’s low cross simply wanted to be steered into the online, however the German ahead fired properly over the bar from six yards out.
They did seize the lead halfway by way of the primary half although when Mason Mount’s pin-point 50-yard move behind the Rennes defence allowed Hudson-Odoi to dash clear, earlier than he confirmed glorious management and supplied a cool end previous Alfred Gomis.
Gomis saved brilliantly from Mount, nevertheless it was Mendy who was the busier of the 2 goalkeepers. He was lastly overwhelmed on 85 minutes as Guirassy was left unmarked at a nook and powered his header into the online.
It regarded to have sealed some extent for the house facet, however when Rennes gave up possession simply outdoors their field, Hakim Ziyech arrange Werner, whose shot was saved by Gomis, just for Giroud to go within the rebound.