The Rangers have signed 35-year old lefty Nate Robertson, with the idea of using him in the bullpen as a lefty specialist. Robertson pitched in 26 games (5 starts) in Independent and AAA-ball last year in which he was 0-3 with a 6.32 ERA and a 1.51 WHIP. He last pitched in the majors in 2010 with the Marlins and Phillies. Robertson has now pitched in 223 games (187 starts) in his first nine years in the majors and he is 57-77 with 1 save, a 5.01 ERA and a 1.47 WHIP. Robertson will get his shot to win a bullpen job for the Rangers this spring.