The first big free agent is off the board, as the Tigers have reached agreement with star right-hander Jordan Zimmermann, CBS Sports has learned.

The deal is pending a physical.

Fox Sports first reported the Tigers were in serious talks with Zimmermann late Saturday night.

Zimmermann becomes the first front-line pitcher to do a deal in a market stocked with excellent starters. He is expected to sign a five-year contract, worth $110 million. Fox Sports and ESPN first reported the terms of the deal.

The Tigers have been trying to upgrade their staff and may look for a second starter. They previously enhanced their bullpen by trading for closer Francisco Rodriguez.

The Tigers finished last in 2015.

The Nationals will receive a draft choice since they made Zimmermann a qualifying offer.

The free-agent starting pitching market is led by Zack Greinke, David Price and Johnny Cueto, with several other excellent starters also available, including Jeff Samardzija, Wei-Yin Chen, Ian Kennedy, Mike Leake, Hisashi Iwakuma, Yovani Gallardo and many others.

Zimmermann, 29, was 13-10 with a 3.66 ERA last season and has a career 3.32 ERA. He had Tommy John surgery several years ago, which may have limited his market a bit.