It is easy to say that Derek will not be a reliable player in 2014 however I believe in Jeter and his ability to know his body by now. He rushed his return in 2013 which is what contributed to his absence. Knowing this, Derek Jeter should be able to learn from this mistake and to assess accordingly in 2014. Jeter has the ability to put up great numbers, as he has proven throughout his nineteen years in the Major Leagues. He has 3,316 hits and can still make solid contact; he even hit a home run in his first at bat against lefty Matt Moore after returning from his second DL stint in 2013. Jeter has the ability, even at 40, to be a consistent player. However, his body is not as quick to heal as it was when he was younger and more durable. Jeter's body has more of a chance to break down after all of the wear and tear over a long baseball career. At age 40, Jeter will be the oldest starting shortstop in Major League Baseball by a wide margin.
Girardi's other shortstop option will be Eduardo Nunez, who is a nightmare defensively but is a good line drive hitter. I do believe though, that Nunez will see little to no playing time at short as he may be needed more at third and second base. I do think though, that Nunez's bat and speed on the bases would help the Yankees who find themselves with a few more power hitters again.
Prediction for a healthy Derek Jeter in 2014: .300 AVG, 10 HR, 58 RBI, 180