Boom Herron was the Colts' go-to running back down the stretch and during the playoffs last season.
But in 2015, he won't play at all for Indianapolis.
Herron was waived/injured on Sunday, a day packed with numerous moves from the Colts as they continued to massage their roster ahead of next Sunday's season opener.
The decision means Herron will be subject to waivers and then, if he clears, revert to the Colts' injured reserve list. It all stemmed from a big hit Herron absorbed in Thursday's preseason finale, when he was hit by a Cincinnati Bengals player while returning a kickoff in the second half.