Derek Jeter is in decline. Not so much at the plate - he probably has at least one more .300 season in him - but in the field.
During his career, he has only "started" at DH in 29 games - pretty incredible if you think about it. However, he has been the DH 20 times in the past three years, including 10 times last season.
I get it, Derek Jeter will always be a shortstop. However, if he wants to be an everyday player, he may have to sacrifice some time in the field.
Derek played in 122 games last year and was injured at times last year. Assuming he stays healthy (no major injuries), and plays about 140 games, I could see him only DH'ing 15 times.
Here is why:
1) Shortstop takes a toll on your body. Other than catcher and pitcher, no position requires more movement in the field than shortstop.
2) DH is thin. After Jesus Montero was traded to Seattle, it left a hole at DH. As of right now, it looks like DH will be a "by-committee" approach featuring A-Rod and Derek as leading candidates to split some time there.
3) Derek's contract. Jeter will turn 38 in June and is in the middle of a 3 year deal (with an option for a 4th season). Do the Yankees want to overuse him this year, of take a more conservative approach and go for longevity. For a guy who most likely wants to play past his contract, I'm starting Jeter at DH more than a few times!