Mata makes debut for United as van Persie returns from injury
Juan Mata was handed his first Manchester United start for their Barclays Premier League encounter with Cardiff - and Robin van Persie returned too as David Moyes' men looked to kick-start their season.
Mata completed his club record £37.1million move from Chelsea on Saturday, while Van Persie has missed 11 games with a thigh strain.
Ryan Giggs was handed his 800th start for the club, whilst Wayne Rooney was also back on the bench after shrugging off a groin problem that has kept him out since the New Year's Day defeat by Tottenham.
Former United striker Fraizer Campbell was named in attack by Cardiff boss - and Red Devils hero - Ole Gunnar Solskjaer, who also handed Craig Bellamy his first start since November 9.