Manchester, Oct 1 (Zee News): Manchester United battled back after conceding a fourth-minute goal to grind out a hard-fought 2-1 victory over VfL Wolfsburg at Old Trafford on Wednesday, the English side`s first Champions League win of the season.

There was huge pressure on United after they lost to PSV Eindhoven in their opening Group B match two weeks ago and their night got off to the worst start when Daniel Caligiuri opened the scoring for the well-drilled visitors after some poor defending.

United, who came from behind to beat Wolfsburg 2-1 exactly six years ago to the day, followed the same script with Juan Mata equalising with a 34th-minute penalty, while defender Chris Smalling proved to be the unlikely match-winner when he slid in to score his first goal of the season after 53 minutes.

United manager Louis Van Gaal, who said before the match United had to win all of their home games to have any chance of making it through to the last 16, told BT Sport it was a hard-earned victory.

Sergio Aguero scored a last minute penalty to give Manchester City a 2-1 comeback win at Borussia Moenchengladbach in the Champions League on Wednesday and their first three points in Group D.

Gladbach, having waited 37 years for their first home game in Europe`s premier club competition, stunned their big-name opponents with a 54th minute goal by Lars Stindl.

City, who have goalkeeper Joe Hart to thank for keeping them in the game with half a dozen superb saves, drew level after Nicolas Otamendi`s strike was deflected in by Andreas Christensen for an own goal in the 65th minute.

City launched into a late rally in search of a winner and were rewarded when Argentine striker Aguero scored from the spot.

The result moved City up to three points with Gladbach still to earn any in Group D.