LOS ANGELES -- Why would the Los Angeles Dodgers consider giving up a well-regarded minor league player for a pitcher they would have guaranteed to be under contract for only about two months? According to one source, the Dodgers' continued interest in Jon Lester of the Boston Red Sox boils down, in part, to positioning themselves for the best playoff look.Lester is 6-4 with a 2.11 ERA in 11 postseason starts. Zack Greinke, the Dodgers' No. 2 starter, is 2-2 with a 4.