NFL offenses are struggling on two-point conversions. No one knows why

As the two-point try celebrates 30 years in the NFL rule book, teams are converting a scant 31.3% of them this season, down from 55.1% last year

The Baltimore Ravens were hardly having the best of days, but they'd successfully negotiated a last-ditch journey Sunday against the Pittsburgh Steelers by driving 69 yards in nine plays for a touchdown. The Steelers suddenly led by just 18-16 with 66 seconds left.

No doubt the Ravens would try a two-point conversion to tie the score and send the game into overtime. But the Steelers, expecting a Tim Tebow-like pop pass, called time out as quarterback Lamar Jackson got ready to take the snap. So the Ravens called another play.