One of the biggest X-Factors for the Dodgers this season is RHP Dustin May. At his best, May is one of the nastiest and most unhittable pitchers in the entire league. On the other end of the spectrum, though, he can lose his command, and get absolutely torn apart.
Last year, after coming back from Tommy John surgery, we saw both versions of May. He had three really good starts, and he had three really bad starts. Now, fully healthy though, May is one of the most important Dodgers in a rotation filled with injury-prone pitchers.