Surprised this hasn't been picked up yet, but yesterday in our great Belgian league Anderlecht managed to miss 3 penalty's in one game... And score an own goal in the 94th minute to make it 1-1
Linky
In the 12/13 season they missed 13/29(!) pens, in the 13/14 season 7 out of 13 pens, in the 14/15 season 5 out of 9, and now their record is 4 out of 5. A 48% scoring ratio. Great.