Keizer (undisclosed) was placed on the Reserve/Retired list Sunday.
Keizer (undisclosed) was activated off the Chiefs non-football injury list Friday, NFL reporter Aaron Wilson reports.
Keizer signed a one-year contract with the Chiefs on Tuesday, Kari Williams of 41 KSHB Kansas City reports.
Keizer logged 302 snaps on offense in 2020 but reeled in just six of his nine targets for 63 yards over the course of the season.
Keizer caught his only target for five yards during Sunday's win over the Raiders.
Keizer signed a reserve/future contract with the Chiefs on Tuesday, according to the NFL's official transaction report.
Keizer signed a contract with the Chiefs on Friday, Aaron Wilson of the Houston Chronicle reports.
Keizer was waived by the Ravens on Thursday.
Keizer signed a futures contract with the Ravens on Tuesday, freelance NFL writer Howard Balzer reports.
Keizer was waived by the Ravens on Friday.