Manchester United's striker Marcus Rashford scored the winning header as they secured a crucial 2-1 victory over Liverpool in their Champions League clash at Old Trafford on Tuesday night.
The result was a huge boost for Manchester United, who had been struggling with injuries and form since the beginning of the season. The win moved them up to second place in the Premier League standings, just one point behind leaders Chelsea.
Fellaini, who joined Manchester United from Everton earlier this year, made his debut against Liverpool and scored the game-winning goal. He came off the bench in the 79th minute and headed home a low cross from Marcus Rashford to give the Red Devils the lead.
Rashford, who had struggled to find the net all season, scored twice against Liverpool to become the joint-top scorer in the league so far. His first goal came in the 45th minute when he volleyed home a free-kick from close range.
Liverpool, who were without captain Jordan Henderson due to injury, fought back late in the match but could not overcome Manchester United's superior firepower. They were reduced to 10 men after James Milner was sent off in the 88th minute for a handball.
The win moves Manchester United into a strong position for the remainder of the season, particularly given the challenges they have faced so far. They will face another tough test against Arsenal in the next round of the Champions League on Wednesday evening.