Two favourable video reviews helped Manchester United beat West Bromwich Albion 1-0 for their first home win in the Premier League this season.
First, VAR overturned a penalty awarded to West Brom for a foul on Conor Gallagher by Bruno Fernandes.
Soon after, Fernandes stepped up to take a spot-kick after Darnell Furlong handled Juan Mata's cross. His first effort was saved by Sam Johnstone, but a replay showed the goalkeeper had come off his line, and the midfielder scored from the retake.
West Brom fought hard, with substitute Callum Robinson hitting the crossbar, and United goalkeeper David De Gea producing a good save to deny Conor Townsend.
The three points lifted United to ninth in the Premier League, seven points off leaders Tottenham.
It was United's first league victory of the season at Old Trafford, after a winless run that included defeat to Crystal Palace and a heavy loss to Tottenham.
Manager Ole Gunnar Solskjaer said: “It was important to get the first win at home. Delighted with the points. We know we can do better, but three points are three points and we got a clean sheet.
“The league this season, there are going to be ups and downs and inconsistency, unpredictable. The league is not really settling. It is very tight, it is very early on so points are more important than performances sometimes.”