A thrilling UEFA Champions League night witnessed two comeback wins for Barcelona and Manchester United, whereas defending champs Chelsea were undone in Ukraine. Barcelona came back from a goal down to grab a hard-fought 2-1 win over Celtic...surprisingly Lionel Messi didn't score! At Old Trafford, Manchester United overcame another sloppy start to beat Portugal's Braga 3-2. Holders Chelsea were condemned to their first defeat of the season by losing 2-1 at Shakhtar Donetsk. Last season's runners-up Bayern Munich claimed an unimpressive 1-0 win at Lille.