During the World Cup 2006 quarterfinal penalty shoot out between Germany and Argentina, Jens Lehmann's stellar performance was attributed to a cheat sheet he kept stuffed under his shin pad, detailing the spot-kick habits of La Albiceleste's finest.
When Wednesday night's DFB Pokal semifinal between Borussia Mönchengladbach and Bayern Munich ended goalless after 120 minutes, Mönchengladbach shot stopper Marc-André ter Stegen attempted to replicate Lehmann's heroic feats, with a similar note prepared by goalkeeping coach Uwe Kamps.
Sadly, it didn't work out quite so well.
According to Bild, the note explained how David Alaba tends to shoot low and to the right (he did, but too powerfully to be saved), Franck Ribery usually smacks the ball up the middle (he didn't) and Thomas Müller often chooses careful placement over power (he had been subbed off earlier in the game). Ter Stegen didn't save a single spot kick, and probably would have been better off randomly guessing.
The moral? Never try to research or prepare for anything.