Position: Right-handed reliever
Size: 6 feet 8, 215 pounds
Opening day age: 31
How acquired: Signed to a two-year, $4-million deal as a free agent on Dec. 11, 2017
Major league service time: 133 days
Contract status: Rangers will allow Martin to become a free agent by releasing him after the 2019 season
2017 recap: Martin, of Arlington, spent the last two seasons with the Hokkaido Nippon Ham Fighters of the Japan Pacific League. He had 21 saves in 2016 but was moved into a set-up role last season and had 29 "holds," preserved save chances.