I realize that if Zack Wheeler is healthy, you start him over Bartolo Colon. The money, the upside, and the age make it a no-brainer. But I'm not sure that for 2017 Zack Wheeler is better than Bartolo. Bartolo just went 15-8 with a 3.43 ERA. His WHIP was 1.21. In his prior Met years, his ERA was higher (3.90 as a Met overall) but his WHIP was pretty consistent. (1.21, 1.24, 1.23). Zack Wheeler has a good career ERA of 3.50, but his WHIP has been 1.36, and 1.33. In his last full season, he walked 79 batters in 32 starts, 185 innings. Colon, by comparison, walked 32 batters, in 191 innings over 34 starts. And this was before Wheeler got hurt. Now this is not to say you should sign Colon, or that he's likely to come back. Just that when you assess this situation, Bartolo might actually be better than Wheeler. Maybe.