That means both players are now free agents, and if the Patriots so choose, they can sign one or both back to their practice squad.
Each player was called up from the practice squad a day in advance of the Bengals game, with Kanorris Davis playing 21 special teams snaps and Ja'Gared Davis logging six snaps.
The Patriots have one active roster spot open after re-signing veteran defensive back Marquice Cole on Monday.
Below is a snapshot of their current practice squad:
Offensive lineman Braxton Cave
Offensive tackle Jordan Devey
Defensive lineman Marcus Forston
Defensive lineman A.J. Francis
Defensive back Justin Green
Offensive lineman Josh Kline