The duct tape rotation can only succeed for so long, and the Yankees are on their last limb.
Last season when all starting pitchers except for Hiroki Kuroda fell to injury at some point, the Yankees were able to fill in with depth. Vidal Nuno, Shane Greene, Chase Whitley, and Chris Capuano managed to eat up a combined 298 innings, and that's actually pretty remarkable given the fact the Yankees were not supposed to have any pitching depth beyond their starting five. And even with that many innings coming from sub-optimal sources, the team's starters still had a collective 96 ERA- and 95 FIP-.