The Diamondbacks added another power arm to their bullpen, agreeing to terms with reliever Hector Rondon on a one-year deal with a club option for 2021, sources said Wednesday.

Rondon, who turns 32 next month, is guaranteed $3 million, one source said. He will earn $2.5 million in 2020 with a $500,000 buyout on the team option. The agreement is pending a physical exam.

Rondon features a fastball that sits in the mid-to-upper-90s along with a power slider. He posted a 3.71 ERA in 62 games last season with the Houston Astros, but came up with the Chicago Cubs, helping them win a World Series in 2016. He owns a 3.29 ERA in 416 innings across seven seasons in the majors.

Rondon has experience as a closer, pitching in the role for all or parts of four seasons.

Rondon joins Junior Guerra as the Diamondbacks’ biggest offseason additions to their bullpen. They join incumbent closer Archie Bradley as well as Andrew Chafin, Kevin Ginkel and Yoan Lopez, among others.

Reach Piecoro at (602) 444-8680 or nick.piecoro@arizonarepublic.com. Follow him on Twitter @nickpiecoro.

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