Justin Upton, Atlanta's newest outfielder, has been valued at 13 Wins Above Replacement over the past four seasons. That total has him tied for 40th among position players and tied for 15th-best among those who played at least half their games in the outfield.

Upton would have rated higher had it not been for his defensive metrics.

That sounds odd, particularly given that scouts view Upton's defense favorably.

Since 2009, Upton has received credit for 43 Defensive Runs Saved for his ability to turn batted balls into outs, second-best among right-fielders.

However, Upton has lost more than 60 percent of that value for his issues in other areas.

He is among the worst in deterring baserunners and defensive misplays.