Missed field goals. It's bad enough when a drive flames out when it's close enough to scoring a touchdown that you can kick a field goal. But to then miss the field goal? Giving up long runs. Hate it. Ohhhhh, I hate it. If I had my way, no opponent would ever get off a run of more than 2 yards. Interceptions/fumbles in the end zone. Any turnover is bad, but when you're about to score, that's a killer.