The Cubs are taking a chance on Joe Nathan getting back to form. USATSI

The Cubs on Tuesday announced that they signed veteran reliever Joe Nathan to a major-league contract for 2016. Financial terms of the deal were not disclosed.

Nathan, 41, is working his way back from Tommy John surgery, which he underwent in April of last year.

Across parts of 15 big-league season, Nathan has pitched to a 2.89 ERA (150 ERA+) and 2.84 K/BB ratio in 777 games, 748 of which have been relief appearances. Nathan's 377 career saves put him eighth on the all-time list.

Nathan's obviously had a great career, but in 2014, his last full season, he logged an ERA+ of 81 while issuing 26 unintentional walks in 58 innings. Consider this a depth signing by the Cubs.