Harang, 35, spent most of 2013 with the Mariners, before being released and signing with the Mets to end the season. For the full season he posted a 5.40 ERA (68 ERA+). His strikeout and walk rates were reasonable, but he gave up 26 home runs in 143.1 innings, which works out to 1.63 per 9 innings, the highest rate of any pitcher with 140+ innings.
Harang was better than that in both 2011 and 2012 (spent with the Padres and Dodgers, respectively), with an ERA+ (102) and FIP (4.15) both right around league average, but at his age he seems unlikely to turn things back around.
Provided by Baseball-Reference.com
Harang did manage to throw two complete game shutouts in 2013, one of which featured 10 strikeouts and just 2 hits, so on the right day, he can still be quite effective. I can't see him winning the fifth spot in the rotation, but if he's willing to go to Columbus to begin the year, he could be called upon to fill in for a spot start here or there if the rotation suffers an injury or two.