Kickoffs are the most dangerous type of play in football, with 22 players crashing into each other from running starts. And injuries on kickoffs were up in 2015, according to the NFL, with concussions making up part of that increase. That’s bad for player health, and bad for NFL PR, and everyone assumes there’ll come a day when kickoffs are eliminated altogether. Until then, the league wants to reduce the number of kickoff returns. That’s why they moved kickoffs up to the 35-yard-line six years ago.

So: the touchback solution. The logic makes sense at first glance. If a ball is kicked into—but not through—the end zone, the returner has to make a decision: take the ball out, or kneel. With the average kickoff return sitting somewhere shy of 23 yards (this is complicated by including the yardage within the end zone), it often made sense for a returner to try his luck, figuring he could get farther than the 20. Now if kneeling puts the offense on the 25, returners may be less willing to run the ball out....

Here’s the big problem: if moving up the touchback discourages receiving teams from returning a kick, it incentivizes forcing opponents to return the ball. Now the math is no longer in favor of booming a kick out the back of the end zone. Now the math says you should put it in play and force them to bring it back.

Giving the offense the ball on the 25 on a touchback could lead to kickoff teams trying more “mortar” kicks with distance sacrificed for hang time. Two veteran special teams coordinators told the Tribune they believe it will lead more teams to instruct the kickers to get as much hang time as possible while landing the ball near the goal line in an effort to cover a kick and pin the offense inside the 25 or even inside the 20.