Manchester United's 3-1 victory against Middlesbrough on Sunday was their 600th Premier League win.
Goals from Marouane Fellaini -- his first in the league this season -- and Jesse Lingard either side of half-time put United in the driving seat until substitute Rudy Gestede pulled one back for Boro to spark a late flurry.
However, Victor Valdes' late slip handed Antonio Valencia the simplest of chances to make it 3-1 and ease Mourinho's men into fifth place in the table.
�� Congratulations to @ManUtd, who have made history by becoming the first side to record 600 #PL wins! #MIDMUN pic.twitter.com/rVUqahd8b2
- Premier League (@premierleague) March 19, 2017
The win saw 13-time Premier League champions United climb to fifth and close the gap on the top four, but saw 19th-placed Boro lose their 1000th top flight game.
United have 83 more victories than the next most successful Premier League side.