Yankees have had adversity all year. Their leadoff hitter and left fielder and probably best defender, Brett Gardner, has been out all year. Their number 2 starter, Pineda, missed the whole year. They signed Pettite and he pretty much immediately got hurt. Mariano Rivera tore up his knee.
The Yankees are where they are because some old guys are having really good years - Jones, Ibanez, Chavez.