Just clicking through some other former Cy Young winners between 2008 and 2012, you've got these guys who fared fairly well in their 30's: Cliff Lee (5.4, 4.8, 8.6, 4.5, 7.3 bWARs ages 30-34) Zack Greinke (4.3, 9.3, 2.3, 6.0 bWARs ages 30-now) RA Dickey (3.6, 3.6, 5.8, 2.0, 2.5 bWARS ages 35-39) Justin Verlander (4.6, 1.1, 2.2, 6.6, 4.5 bWARS ages 30-34) Roy Halladay (3.5, 6.2, 6.9, 8.3, 8.9 bWARS ages 30-34) And that's practically every Cy Young pitcher from those years that's even had at least 4 years in their 30s to consider.