If FC Bayern Munich does not win against PSV, it would be the first time since 2009 that Bayern did not win two of its first three group matches. In any other case (a win for Bayern or a draw, that is), PSV has not won in its first three games in the Champions League. That happened three times before and in all those cases PSV finished last in the group. So winning is statistically necessary.
Ball possession
When PSV steps onto the pitch tonight at the Allianz Arena in Munich, it will not expect to have a predominance. Indeed, in the first two UEFA Champions League matches, no team had more ball possession than FC Bayern Munich. The Germans had possession of the ball 68% of the time. That's even more than FC Barcelona.
Nilis and Van Nistelrooy
PSV has little positive history against Bayern Munich. The teams met six times before. In the 1986/1987 season and in the 1989/1990 season, the Germans eliminated PSV. By the way, Bayern lived up to its German reputation in those four encounters: all five goals in those four games fell after the 75th minute. The last duel was in the group stage in the 1999/2000 season. After a 2-1 loss in Munich, PSV surprised with a 2-1 win at Philips Stadion. Ruud van Nistelrooy and Luc Nilis scored the goals.
German curse
Since PSV won a UEFA Cup match against Eintracht Braunschweig in the 1977/1978 season, the team has been unable to win any away matches in Germany. Three times they drew, ten times the PSV coach drove home without any points. PSV also does not have good memories of midfielder Xabi Alonso: In his time at Liverpool, he played five games against PSV. He won four and drew once. A more positive statistic for PSV must be sought from coach Carlo Ancelotti. In 2005, he coached AC Milan against PSV four times and won only one of those duels. PSV drew twice, including the 3-1 win in the Champions League semifinals.