Rockies infielder Chris Nelson is considered the favorite to win the starting third-base job, with prospect Nolan Arenado likely headed to Triple-A Colorado Springs to open the season, according to The Denver Post. The paper suggests, however, Arenado could be one Nelson cold streak away from being recalled. Entering play Wednesday, Arenado was batting .288 (15 for 52) with four doubles, four homers and 12 RBI in 18 spring games.