Chelsea, who crushed Malmo 4-0 when the two sides met in London two weeks ago, remained second in the group, level on nine points with leaders Juventus, who play Zenit St Petersburg later on Tuesday. Malmo remained at the bottom of the standings without points.
The Swedish champions frustrated their visitors in the first 45 minutes and goalkeeper Johan Dallen made a superb save for several chances with Malmö retracting the defense for long periods..
Chelsea finally managed to score in the 56th minute when Callum Hudson-Odoi outplayed Franz Berson and sent a neat low cross in front of goal to Ziyech to put it in the net, scoring the winning goal for coach Thomas Tuchel’s team in a match that was more difficult than expected..