Terms of Hammel's deal were not yet known. The 30-year-old requested $8.25 million when he filed for arbitration, while the Orioles offered $6.75 million. Hammel was 8-6 with a 3.43 ERA in 20 starts last season.
Fellow righty Darren O'Day is the Orioles' only arbitration-eligible player who has not struck a deal.
Cash Kruth is a reporter for MLB.com. Follow him on Twitter at @cashkruth. This story was not subject to the approval of Major League Baseball or its clubs.