Did you know? United legend Duncan Edwards was told by Sir Matt Busby he would make his debut against Cardiff, while aged just 16 in April 1953, after sweeping the stands at Old Trafford on the day before the match.
The manager: Malky Mackay took over as Cardiff manager in June 2011, piloting them to the Carling Cup Final in his first season in charge. A year later the former Celtic, Norwich, West Ham and Watford defender guided the Welsh club back into the top flight for the first time in 51 years as winners of the Championship.
Star man: Chilean holding midfielder Gary Medel, Cardiff's record signing for £11m, seems perfectly suited to the rough and tumble of the Premier League and also impressed for his country when they comfortably saw off England at Wembley last week.
Quote/unquote: "I will not change the aggression in my game. English football is great. In Spain, if you breathe you get a yellow card. Here it is more intense physically. I like to be intense, I love to win the tackles. I will not change that." - Cardiff's Gary Medel.
Whistle-blower: Lancashire's Neil Swarbrick last took charge of the Reds in the 4-0 win over Norwich in March, issuing four yellow cards all to the Canaries.
Rivals watch: League leaders Arsenal face Southampton at 3pm on Saturday, following Liverpool's lunchtime meeting with Everton at Goodison Park. Chelsea take on West Ham in the Saturday tea-time fixture, while Man City's home date with Spurs will just have finished when United kick off in Cardiff.