DRS was created to take range into account when measuring a player's defensive ability.
In calculating DRS, points are either added or subtracted to a fielder's rating depending on whether or not they make a play on a ball that is hit towards them.
The table shows that only two players appear on both lists (Simmons and Hardy), exemplifying that there is a difference in what the two statistics measure.
Thus, players of earlier eras who were noted for the defensive skills—such as third baseman Brooks Robinson and shortstop Ozzie Smith—were not evaluated in this manner.
[11] Note that the totals for both Beltré and Jeter only reflect 2003 onward, even though both players began their MLB careers earlier.