KANSAS CITY, Mo. -- The Los Angeles Dodgers' offseason objective was to get younger and more athletic. Then they went out and signed a bunch of relief pitchers.The two young athletes they brought in, Cubans Alex Guerrero and Erisbel Arruebarrena, have had 15 major league plate appearances between them this season. There is a young and speedy outfielder, Joc Pederson, in the wings, but he has been blocked all season by four veteran outfielders in L.