Gray was waived by Kansas City on Tuesday, Herbie Teope of The Kansas City Star reports.
Gray signed a contract with the Chiefs on Saturday, Ian Rapoport of NFL Network reports.
The Ravens waived Gray from their practice squad Monday, Jonas Shaffer of The Baltimore Sun reports.
Gray was cut by the Ravens on Monday, Ryan Mink of the team's official website reports.
Gray signed a one-year contract with the Ravens on Thursday, Ian Rapoport of NFL Network reports.
Gray reverted back to Atlanta's practice squad Monday, per the NFL's official transaction log.
Gray was promoted to the Falcons' active roster Saturday.
Gray signed to the Falcons' practice squad Monday, William McFadden of the Falcons' official site reports.
Gray was waived by the Falcons, Jason Butt of The Atlanta Journal-Constitution reports.