The value of the contract was first reported by The Athletic. There is $15 million of deferred money in the deal.
This marks the second time in four years the typically frugal Diamondbacks have signed a top-tier, free-agent pitcher. In 2015, Arizona added right-hander Zack Greinke on a $206.5 million, six-year deal.
Arizona went 85-77 last season and traded Greinke to Houston in late July. The Diamondbacks haven’t had a lot of success in October lately, not winning a game in the National League Championship Series round since taking their only World Series title, in 2001.
Bumgarner will join a rotation that includes right-handers Zac Gallen, Luke Weaver and Merrill Kelly and left-hander Robbie Ray, who is in the final year of his contract and sources said is likely to move in a trade. If Ray is dealt, left-hander Alex Young or right-hander Mike Leake would fill out the rotation.
The 30-year-old Bumgarner, the Most Valuable Player of the 2014 World Series for the San Francisco Giants, went 9-9 with a 3.90 ERA last…