Louis van Gaal hails 'one of the most important moments in my career' as Manchester United beat Liverpool to move five points clear in race for fourth

Louis van Gaal described his victory as 'one of the most important moments in my career' as Manchester United moved five points clear of arch-rivals Liverpool in the race for a Champions League place.

Van Gaal refused to write off Liverpool's chances of finishing in the top-four but could not under-estimate the value of a 2-1 victory after Juan Mata struck twice. It was Liverpool's first Premier League defeat in 13 games since they lost 3-0 at Old Trafford in December.

'We beat Liverpool again,' said Van Gaal. 'They were in fantastic shape and we beat them with the old weapons – with the pressure on the ball in the first half.

'I think it's my best game in a United shirt, yes. It's a massive game, probably the biggest in English football, so to score two goals is great for me,' Mata told Sky Sports.

'The second goal has to be up there with my best. After Steven Gerrard was sent off we needed a second goal because they pushed us to the end.

'It was important for me. The last few months I've not had the best moment. It is the manager who decides but I'm happy today.'

Van Gaal was sufficiently impressed, but like Mourinho at Chelsea who preferred Oscar, Willian and Eden Hazard in the three creative positions behind the lone striker, said Mata did not always fit into his formation.

'Now he is playing as a false right winger and the communication with (Ander) Herrera and (Antonio) Valencia gives him more opportunities,' Van Gaal told reporters.

'I think he was one of my most consistent players. I am not amazed, but I am very happy for him.'