Ervin Santana has been good but not great. He was 17-10 last season, with a 3.92 ERA, 1.320 WHIP and he chewed up 222.2 innings. At 28 years old, he isn’t likely to improve very much, but he could hold those numbers for some years. The Yankees lost Andy Pettite this week, who had a career 3.88 ERA, so Santana could be a logical replacement. But why would the Angels deal a valuable piece of their young rotation?