Chiefs’ TE Travis Kelce is being placed on the Reserve/COVID list, sources tell ESPN.

Related players: Jody Fortson, Blake Bell, Noah Gray

Schefter said Kelce is vaccinated so there’s a chance he’s back for Sunday with the new return-to-play protocols.

The Chiefs used a lot of multiple tight end formations during Reid's early seasons. From 2014 through 2017, they were in the NFL's top 10 every season in number of plays out with three tight end personnel groupings. They led the league in that category in 2016.

But the Chiefs since moved away from those formations as they improved at wide receiver, adding first Tyreek Hill and later Sammy Watkins and Mecole Hardman. They used no three tight end formations in either 2018 or 2019 and though they did use two tight ends on occasion, Travis Kelce was on his own a lot in terms of his position.

That will change this season.

Related players: Blake Bell, Noah Gray, Jody Fortson

The story said the Chiefs may not always use all four TEs at one time, but they have tinkered with it in practice and the preseason, especially close to the goal line. And, they've had success with it, scoring a TD against the Vikings in the preseason. Four TEs on the field would obviously be bad news for Hill owners because it would mean he's not on the field in those situations. Gray could be a player to keep an eye on as he's the team's fifth round pick from this year's NFL Draft.