Voted Man of the Match on Twitter, Juan Mata evidently impressed the fans on his Manchester United debut but what did the pundits think?
In particular, how does former Reds midfielder Sammy McIlroy rate the Spaniard? Watch our clip from MUTV's popular match analysis programme, The Big Match De-brief, to find out.
In the full, half-hour version of the show, McIlroy casts his expert eye over the Cardiff City match as a whole and discusses the winning return to action for strikers Robin van Persie and Wayne Rooney.
There are several opportunities to watch or record the Cardiff episode of The Big Match De-brief on MUTV, including 19:30 and midnight GMT on Wednesday. For details of how to subscribe to MUTV, visit www.manutd.com/joinmutv.