The career saves leader took a cut from his US$30 million deal that covered the last two years — but he can earn additional money in award bonuses.
Rivera was limited to nine games this year after tearing the anterior cruciate ligament in his right knee during pre-game batting practice in Kansas City on May 3.
“I didn’t want to go out like that,” he said in a statement. “I didn’t want that to be the last image, but it wasn’t an easy decision because there’s more than just baseball with me ... I’m not just coming back to play. I’m coming back to win.”
Rivera, with 608 saves in the regular season and 42 more in the postseason, is a 12-time All-Star. The Yankees say his recovery from June 12 knee surgery will be complete by opening day.
By then, Martin will be handling a new pitching staff in Pittsburgh after spending the past two seasons with New York.
The free-agent catcher goes from a franchise that’s won a record 27 World Series titles to a team that has endured a record 20 consecutive losing seasons.
Humber, who threw a perfect game for the Chicago White Sox last season, was claimed off waivers by the Astros and agreed to a one-year contract. He gets an US$800,000 salary next year and Houston holds a club option for US$3 million in 2014 with a US$50,000 buyout.
The 29-year-old right-hander went 5-5 with a 6.44 ERA in 26 games last season, including 16 starts.
Jurrjens was non-tendered by the Braves after getting demoted to the minors last season. Atlanta also declined to offer a contract to reliever Peter Moylan, but claimed David Carpenter off waivers from Boston.