A proposed rule that would provide an alternative to onside kicks did not pass on Thursday, according to the MMQB's Albert Breer.
The rule would have provided teams with an untimed fourth-and-15 play from its own 25-yard-line to retain possession after a score.
According to NFL Network's Tom Pelissero, there was no official vote on the proposal, but the league did take a virtual show of hands and did not have the support to pass it on Thursday.
The rule would have needed the support from 24 of its 32 owners to pass the rule.