Mayer typically serves as the Raiders' No. 2 tight end when he's available, but his absence will loom larger in Week 5 since starter Brock Bowers (knee) is inactive for the first time in his career. With Bowers and Mayer in street clothes,

According to ESPN, both tight end Michael Mayer and cornerback Eric Stokes were on the practice field Wednesday. #Raiders TE Michael Mayer (concussion) and CB Eric Stokes (knee) are practicing.

The Raiders elevated Albert Okwuegbunam and Carter Runyon amid Michael Mayer’s injury concerns, while RB Ashton Jeanty continues to struggle.

Mayer (concussion) is listed as questionable for Sunday's game against the Colts, Ryan McFadden of ESPN.com reports.

In Week 3, tight end Michael Mayer was forced to leave the game early due to a concussion. He has missed practice all week, as he has been in the NFL’s concussion protocol. Unfortunately for the Raiders, he’s not going to be ready in time for the Bears game. The team announced on their Friday injury report that Mayer has officially been ruled out.

Raiders tight end Michael Mayer suffers nasty injury while making special teams tackle in Week 3 against Commanders

The Las Vegas Raiders announced on Saturday that starting tight ends Brock Bowers and Michael Mayer are not expected to play against the Indianapolis Colts on S

The Raiders will be without tight end Michael Mayer for the second straight game Sunday against the Indianapolis Colts because of a concussion.