The 31-year-old Cishek had a 2.01 ERA and a 3-2 record in 49 relief appearances this year for Seattle and Tampa Bay, which acquired him on July 28. He joins a rebuilt Cubs bullpen that also includes fellow right-hander Brandon Morrow, who finalized a $21 million, two-year contract on Tuesday.
The Cubs announced the deal on Saturday. Cishek posted on Twitter: “I’ve had go Cubs go playing in my head since Thursday… thankful for this opportunity and beyond thrilled to be a Cub!”
Cishek is 24-28 with a 2.73 ERA and 121 saves over eight seasons.
His eight-year major league career started with the Florida and Miami Marlins from 2010-15. He was traded to St. Louis in July 2015, became a free agent and signed a $10 million, two-year contract with the Mariners.