The number 13 is of course famously unlucky.
And if you're already superstitious about the Browns, this photo, snapped during the Browns v. Chargers game by Reddit user goregyle
, should give you one more reason to fear for the season: If your eye can't catch it on its own, it's 3rd and 13 with 13:13 to go in the third quarter. Game score: 13 to 13.
The Browns lost on a field goal (which was initially missed, but replayed because of a Browns offsides flag) as time expired.