Defensive stats need to be improved. (Insider).(baseball statistics)

Manager Bobby Cox estimates that Andruw Jones saves the Braves 100 runs a season, claiming that his center fielder has "RBIs in his glove." The exact number of Jones' RBIs is well-chronicled. His most obscure offensive statistics are reported widely. But good luck finding an accurate gauge of his defensive value.

Fielding percentage? It doesn't measure how many fly balls Jones catches that other center fielders would fail to grab. Number of assists? It doesn't reflect how many runners decline to challenge Jones' powerful arm. Total chances? Jones routinely leads all major league outfielders, but his totals might be even higher if he didn't play behind a ...