To miss one penalty can always be a matter of luck. To miss two suggests poor taking - but can also be incredibly unlucky.
However, for West Brom fans on Saturday afternoon, Saido Berahino's two missed penalties weren't isolated incidents. Indeed, the young forward has been out of form for some time.
He's gone from a goalscorer in demand to a man even the Baggies faithful no longer want.
How will he attract a new club in the summer if the 22-year-old is playing this badly? And how can West Brom rely on Berahino if... he is playing this badly?
Will Jeremy Peace regret rejecting so many big bids for Berahino over the last two windows? That's certainly what plenty of Baggies fans think. They also can't seem to wait for Berahino to either be moved on or dropped from the West Brom squad.
Here's how supporters reacted on Twitter as the youngster had two penalties saved for West Brom against Watford...
That game was shocking.— || M A Z || (@maria_wba) April 16, 2016
Berahino - wtf? Miss 1 penalty, fine but 2? Pfft.
This season can't end quickly enough for me. We will seriously regret turning down big money for Berahino. #wba— John (@sempertefallant) April 16, 2016
Can't see Berahino taking a pen again under Pulis. Wouldn't be surprised if that's his last game for the club. #WBA— Kyle Norbury (@_FootballNerd) April 16, 2016
No one will come in for berahino not just because of today he's not the same player his overall game is shocking! #wba— Jamie Oldnall (@jamiereppin7) April 16, 2016
I nearly put Berahino in my fantasy football team this week. Bullet dodged! #wba— Aidan Browne (@aidanjwbrowne) April 16, 2016
Berahino should of let Gardner or someone else take the second penalty. Don't even give me that "he showed great confidence" nonsense. #wba— Daniel // DalBiioN (@DalBiioN_) April 16, 2016