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<blockquote data-quote="roadkill" data-source="post: 968329" data-attributes="member: 1555"><p>I can see both sides of the argument over the utility of this stat. (After I finally overcame my semantic confusion over y'all's use of the term "available yards", which is just a function of starting field position x # of drives, when you actually mean the <em>ratio</em> of actual yards to available yards (DAY) as a defensive metric, or OAY as an offensive one.)</p><p></p><p>One can think of numerous examples which either support the utility of this metric or undermine it, simply by moving the starting field position. Case in point, in [USER=1175]@ibeattetris[/USER] example of a team that started from their 50, gained 20 yards, kicked a field goal. What if they actually started at their opponent's 25 (due to a blocked punt, for ex.) and did the same? Most would laud the other team's D as "winning" this drive by holding to a field goal, despite the fact that the team on offense gained 80% of available yards and scored 3 points.</p><p></p><p>It seems to me that a <em>successful</em> "bend but don't break" defensive scheme would normally have a relatively high DAY, which undermines the concept of using DAY to evaluate defensive quality. On the other hand, it seems like it would be somewhat useful in comparing teams with elite defenses that force a lot of 3-and-outs, or elite offenses that score a lot. But wouldn't ppd be better for that?</p><p></p><p>I think the problem may be that many advanced stats need to be used in the proper context, rather than in isolation. That's probably why the rating systems that use them generally combine a number of advanced stats into a formula to yield a single number for ranking purposes.</p></blockquote><p></p>
[QUOTE="roadkill, post: 968329, member: 1555"] I can see both sides of the argument over the utility of this stat. (After I finally overcame my semantic confusion over y'all's use of the term "available yards", which is just a function of starting field position x # of drives, when you actually mean the [I]ratio[/I] of actual yards to available yards (DAY) as a defensive metric, or OAY as an offensive one.) One can think of numerous examples which either support the utility of this metric or undermine it, simply by moving the starting field position. Case in point, in [USER=1175]@ibeattetris[/USER] example of a team that started from their 50, gained 20 yards, kicked a field goal. What if they actually started at their opponent's 25 (due to a blocked punt, for ex.) and did the same? Most would laud the other team's D as "winning" this drive by holding to a field goal, despite the fact that the team on offense gained 80% of available yards and scored 3 points. It seems to me that a [I]successful[/I] "bend but don't break" defensive scheme would normally have a relatively high DAY, which undermines the concept of using DAY to evaluate defensive quality. On the other hand, it seems like it would be somewhat useful in comparing teams with elite defenses that force a lot of 3-and-outs, or elite offenses that score a lot. But wouldn't ppd be better for that? I think the problem may be that many advanced stats need to be used in the proper context, rather than in isolation. That's probably why the rating systems that use them generally combine a number of advanced stats into a formula to yield a single number for ranking purposes. [/QUOTE]
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