Raiders sign Michael Mayer to a four-year contract extension

The Las Vegas Raiders signed tight end Michael Mayer to a four-year contract extension worth $47.02 million. The deal includes $22.5 million fully guaranteed at signing, with the total value of guarantees reaching $30 million within six months. Mayer, who has recorded 783 receiving yards over his first three NFL seasons, enters the starting lineup following knee surgery for Brock Bowers. The agreement covers three new years of service beyond his existing contract, averaging $15 million annually for that duration. Mayer is expected to see a larger role in the offense while Bowers recovers from a meniscus procedure.

• 6:14 PMNBCSports.com — Inside the Michael Mayer deal - NBC Sports