1. Stefon Diggs' lost fumble that wasn't
This one will haunt Cowboys fans for a while.
Trailing 14-3 in the second quarter, Diggs appeared to lose possession of the football on a catch-and-run. Credit to Diggs for hurrying the Bills back to the line of scrimmage to get a play off before the Cowboys could challenge the play because replay showed the ball was out before Diggs' knee was down.
Markquese Bell punched the ball loose, but it wasn't clear to anyone watching that Diggs lost possession. The below clip shows that the ball was clearly out. The Cowboys recovered it, but nothing was called.
Had the refs done their job, Dallas would've had excellent field position to potentially make the score 14-10 -- or at least 14-6 with a field goal to draw within eight points -- and build momentum going into halftime.
Instead, the Bills retained possession and marched down the field to expand their lead to 21-3. That score felt like the death knell for the Cowboys.
Granted, there's no telling if Dallas would've capitalized with a TD and the defense could have simply stopped Buffalo from scoring. However, there's no denying that this turnover that wasn't could've changed the game. At the very least, the defense discovers new energy and maybe puts up a better fight.
When was the last time the refs missed a fumble? Infuriating, but again, the refs are NOT the reason the Cowboys lost this game.