Pollock, Eaton: D-backs' rookie center (fielders) of attention

PHOENIX -- When the season started, the Diamondbacks were counting on a rookie center fielder to move into the starting lineup and make an impact. One did. That it was A.J. Pollock rather than Adam Eaton was a pleasant surprise -- and another testament to their depth.Eaton was listed on the NL All-Star ballot, a group chosen with the team's input, but his elbow injury in spring training opened a roster spot for Pollock, who never looked back. Pollock leads National League rookies with 12 stolen bases and is tied for the lead with 28 doubles. His defensive WAR is in the top five of all major league center fielders.The emergence of Pollock and return to health of Eaton give the D-backs outfield options as they look to an uncertain 2014, with questions surrounding Cody Ross' recovery time from a fractured hip and the possibility of a trade that would add power. The Diamondbacks ended the season with Pollock, Eaton and Gerardo Parra spending most of the time in the outfield, with Martin...