The story so far...
Missed - Van Persie vs Southampton (A)
Missed - Hernandez vs Wigan (H)
Missed - Nani vs Galatasaray (H)
Scored - Van Persie vs Liverpool (A)
Scored - Giggs vs Chelsea (A)
Missed - Rooney vs Arsenal (H)
Scored - Rooney vs Braga (A)
Scored - Rooney vs Reading (A)
Missed - Rooney vs West Ham (H)
Rooney's failure from the spot in Wednesday's FA Cup replay was his second of the season - he also missed in the November win over Arsenal - and the team's fifth penalty miss of the campaign overall.
The other players who've spurned spot-kick opportunities are Javier Hernandez at home to Wigan, Nani against Galatasaray in the Champions League and Robin van Persie at Southampton, where he scored a hat-trick in open play.
So far, all of this season's penalty failures have come in victories for the Reds but Sir Alex will insist his side don't take that statistic for granted going forward.