The Philadelphia Eagles' proposal of an alternative to an onside kick was not approved, according to NFL Network's Tom Pelissero.
The proposal consisted of a team having a new option to retain the ball after scoring a touchdown or a field goal. In order to earn consecutive possessions, teams would have to convert a fourth-and-20 at their own 20-yard line.
This represented the fifth consecutive year that proposed onside kick alternatives have not been implemented (via Pelissero).
This article will be updated soon to provide more information and analysis.