Racing PositionsRockies activate Chacin, put Rosario on DL4MRosario avoids major injury, still day to day4MSzymborski: Overvalued, undervalued hitters23dDan SzymborskiFantasy: 2013 Sleepers and Busts23dFantasy staffDodgers' Kemp collides with wall, injures knee4MGoldstein: 10 prospects/rookies on the rise23dKevin Goldstein