Harry Maguire struck in the 91st minute to spare Manchester United's blushes as they rescued a 3-3 draw at Porto in the Europa League on Thursday, while Chelsea kickstarted their Conference League campaign with a home win. Tottenham maintained their 100 percent start in the Europa League at Ferencvaros but Serie A side Roma went down 1-0 in Sweden against Elfsborg. The beleaguered Erik ten Hag's Man United made a blistering start in Porto with goals from Marcus Rashford and Rasmus Hojlund firing them into a 2-0 lead in the opening 20 minutes.