And DRS does the same, as I understand it, but then DRS takes the added step of figuring out how many extra bases are being saved or lost, and factors that in. As you say, UZR does not. And so, consistent with Dewans article here, guys who play deep generally score about the same as the shallow guys in terms of UZR, but because they are saving these base advancements, they outperform in DRS: [TABLE=width: 500] [TABLE=width: 452] Player Position DRS UZR Span Shallow[TD=align: right]2 [TD=align: right]9.7[/TD] [/TD] Revere Shallow[TD=align: right]-6 [TD=align: right]-1.9[/TD] [/TD] Fowler Shallow[TD=align: right]-4 [TD=align: right]-1.5[/TD] [/TD] DeJesus Shallow[TD=align: right]-5 [TD=align: right]2.3[/TD] [/TD] Rasmus Shallow[TD=align: right]11 [TD=align: right]9.6[/TD] [/TD] Saunders Shallow[TD=align: right]4 [TD=align: right]7.2[/TD] [/TD] Jones Shallow[TD=align: right]0 [TD=align: right]-4.2[/TD] [/TD] Jay Shallow[TD=align: right]-11 [TD=align: right]-6.7[/TD] [/TD] Ruggiano Shallow[TD=align: right]-6 [TD=align: right]-3.2[/TD] [/TD] Shallow Total[TD=align: right]-15 [TD=align: right]11.3[/TD] [/TD] Difference[TD=align: right]-26.3 Jackson Deep[TD=align: right]6[/TD] [TD=align: right]-0.9[/TD] [/TD] Lagares Deep[TD=align: right]24 [TD=align: right]17.6[/TD] [/TD] Pagan Deep[TD=align: right]-8 [TD=align: right]-4.7[/TD] [/TD] Blanco Deep[TD=align: right]4 [TD=align: right]7.2[/TD] [/TD] De Aza Deep[TD=align: right]-18 [TD=align: right]-4[/TD] [/TD] Hicks Deep[TD=align: right]2 [TD=align: right]-7.1[/TD] [/TD] Deep Total[TD=align: right]10 [TD=align: right]8.1[/TD] [/TD] Difference[TD=align: right]1.9 [/TABLE] [/TD] [/TABLE] Am I understanding this correctly? Is there any reason to use UZR instead of DRS, for outfielders?