Beware small sample sizes and five left-handed pitchers in eight games, but Derek Jeter is hitting .378 in July. Overall, though, he has hit just .279/.325/.351 since May. What if this trajectory continues? The Yankees have shown they can win without Jeter playing like a star--their best month was his worst--but what about next year? What about his defense, which is still a problem? And then there's global warming--what is he going to do about that? Life has a certain inevitability to it. Ultimately, the arguments stop because the elevator stops at Phil Rizzuto 1954. You want to have prepared yourself for impact long before it does.