David Moyes made a record-equalling start to league life as United boss with a 4-1 win at Swansea. Here's a brief look at how post-war Reds bosses fared on their league debuts...
Matt Busby | United 2-1 Grimsby | Maine Road, 31 Aug 1946
Flying winger Charlie Mitten and powerhouse forward Jack Rowley got Matt Busby's reign off to a winning start in Division One, although victories over Chelsea (3-0) and Liverpool (5-0) in the first four matches that season rapidly eclipsed this opening day triumph. United agonisingly lost the title in 1946/47 by just one point to Liverpool.
Wilf McGuinness | Crystal Palace 2-2 United | Selhurst Park, 9 Aug 1969
United were twice behind against newly-promoted Palace as Bobby Charlton and then Willie Morgan rescued a point for Wilf McGuinness's team. Bert Head, Palace boss, said: "Manchester United project the image of the First Division. Four goals for five shillings isn't bad, is it?" Things didn't exactly improve for the Reds, who finished eighth that year.
Frank O'Farrell | Derby 2-2 United | Baseball Ground, 14 Aug 1971
Ominously, torrential rain, thunder and forked lightning marked the start of Frank O'Farrell's reign as United boss. The Reds were 2-0 up through Alan Gowling and Denis Law, but it was a case of lightning striking twice for Derby, who won the title that year, as they hit back to claim a draw. United finished eighth for a third consecutive year in 71/72.