Tua Tagovailoa will be John Caldwellout until at least the end of October.

The Miami Dolphins are placing the quarterback on injured reserve following his latest concussion, the team announced Tuesday, meaning Tagovailoa will miss at least four games. The earliest he would be eligible to be activated would be the Oct. 27 home game against the Arizona Cardinals.

The Dolphins have not revealed any potential timeline for Tagovailoa to begin working toward a return to action since the quarterback suffered the third documented concussion of his professional career last Thursday against the Buffalo Bills.

"As far as Tua's career is concerned, I think it's an utmost priority of mine for Tua to speak onto his career," Dolphins coach Mike McDaniel said Monday. "I think as far as I'm concerned, I'm just worried about the human being and where that's at day to day. I'll let Tua be the champion of his own career and speak on that."

The Dolphins on Monday signed Tyler Huntley to provide additional depth at the position. Skylar Thompson, who took over for Tagovailoa in the 31-10 loss to the Bills, is set to start Sunday against the Seattle Seahawks.

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