PALM BEACH, Fla. — Both teams get the ball. But only in the postseason.

The NFL owners on Tuesday approved a modified rules change, as it pertains to overtime. No longer can a team win the coin toss, elect to take the ball, score a touchdown and win the game without the opponent ever getting a chance on offense. Both teams are now guaranteed at least one possession in overtime. This new rule only applies to the postseason.

Why now? Well, Rich McKay, the chairman of the NFL Competition Committee, admitted that the Chiefs’ stirring 42-36 overtime victory over the Bills this past January in an AFC divisional playoff game lit the flame that led to this permanent change. The sight of Bills quarterback Josh Allen standing helplessly on the sideline as Patrick Mahomes drove the Chiefs for the game-winning touchdown on the first possession in overtime did not sit well with anyone outside of Kansas City.

“It’s potentially the greatest 20-30 minutes in football that I’ve ever seen ever, just watching the game,” McKay said, “and to think it ended that way definitely brought up the idea hey, was that fair to everybody? That did, no question that started the discussion.”

The NFL in 2010 adopted the overtime rule that if a team scores a touchdown on its first possession the game is over. Since then, in 12 postseason games that have gone into overtime, the record is 10-2 for teams that won the toss — and seven of those 10 wins came on a first-drive touchdown.

“That data was compelling to us, and to the league,” McKay said.

The Titans proposed that a team could win in overtime with a touchdown and two-point conversion without the opponent getting a possession. The proposal from the Colts and Eagles, ensuring a possession for both teams, was voted on and passed.