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DB Shuffle - 10/6/19 Edition
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<blockquote data-quote="HardRightEdge" data-source="post: 847162"><p>pro-football-reference.com started posting advanced stats starting with last year's numbers. For example, here is Kevin King's page with no subscription required (as far as I can tell, everything at this site is free):</p><p></p><p><a href="https://www.pro-football-reference.com/players/K/KingKe01.htm" target="_blank">https://www.pro-football-reference.com/players/K/KingKe01.htm</a></p><p></p><p>Scroll down to "Advanced Defense and Fumbles".</p><p></p><p>You'll see all the data that goes into passer-rating-against: competion percentage, attempts, yards, INTs and TDs and the actual passer-rating-against: 63.0 for this season to date.</p><p></p><p>Note the pass rush stats: hurries, knockdowns and sacks. Add 'em up and you get pressures, which is handy for looking at DLs and edges who also have tackles-for-loss counts posted. For CBs such as King you also see missed tackles. The pressure totals may be stricter than other data sources that use "hits" instead of "knockdowns". Dunno if p-f-r.com counts a hit that is not a knockdown as a hurry.</p><p></p><p>There's a caveat. I have no idea where p-f-r.com gets their data. They're not licensing it from PFF, because the data if often different. For example, p-f-r.com has King down for 14 completions on 27 throws. PFF has him down for 16 of 29:</p><p></p><p>h<a href="https://www.pff.com/nfl/players/kevin-king/11788" target="_blank">ttps://www.pff.com/nfl/players/kevin-king/11788</a></p><p></p><p>Discrepancies are understandable given the assignment of responsibility is often subjective. In the case of DB coverage numbers the responsible party in a double team or zone coverage is not always clear. Also, some balls might be borderline uncatchable. If they are deemed such, you throw them out of the data. If you deem it catchable it goes into the defender's stats. That can be a matter of disagreement in some cases.</p><p></p><p>Sack credits are subjective as well, but they are an official stat so everybody uses the same number. I find myself disagreeing with the official assignment of 1/2 sack credits with some regularity. For instance, it's kinda f'ed up that a pass rusher who beats his blocker and forces a QB off his spot and into the waiting arms of a teammate who's blocker loses leverage because the QB is on the move gets squat credit for a 1/2 sack unless he is actually in on the tackle. The guy who actually made the play gets a puny "hurry" to his credit.</p><p></p><p>But I digress. I ain't Elias Sports Bureau, the official source of NFL stats including subjective ones like sacks, so nobody gives a sh*t what I think about how sacks are counted. It should give you pause, however, when a guy like Fackrell ended up with 10 sacks last season.</p><p></p><p>By the way, at the top of of p-f-r.com page you'll see a tab for "Football (college)". That's handy for quick checks around draft time, though the data is pretty basic. Small college players are not included.</p></blockquote><p></p>
[QUOTE="HardRightEdge, post: 847162"] pro-football-reference.com started posting advanced stats starting with last year's numbers. For example, here is Kevin King's page with no subscription required (as far as I can tell, everything at this site is free): [URL]https://www.pro-football-reference.com/players/K/KingKe01.htm[/URL] Scroll down to "Advanced Defense and Fumbles". You'll see all the data that goes into passer-rating-against: competion percentage, attempts, yards, INTs and TDs and the actual passer-rating-against: 63.0 for this season to date. Note the pass rush stats: hurries, knockdowns and sacks. Add 'em up and you get pressures, which is handy for looking at DLs and edges who also have tackles-for-loss counts posted. For CBs such as King you also see missed tackles. The pressure totals may be stricter than other data sources that use "hits" instead of "knockdowns". Dunno if p-f-r.com counts a hit that is not a knockdown as a hurry. There's a caveat. I have no idea where p-f-r.com gets their data. They're not licensing it from PFF, because the data if often different. For example, p-f-r.com has King down for 14 completions on 27 throws. PFF has him down for 16 of 29: h[URL='https://www.pff.com/nfl/players/kevin-king/11788']ttps://www.pff.com/nfl/players/kevin-king/11788[/URL] Discrepancies are understandable given the assignment of responsibility is often subjective. In the case of DB coverage numbers the responsible party in a double team or zone coverage is not always clear. Also, some balls might be borderline uncatchable. If they are deemed such, you throw them out of the data. If you deem it catchable it goes into the defender's stats. That can be a matter of disagreement in some cases. Sack credits are subjective as well, but they are an official stat so everybody uses the same number. I find myself disagreeing with the official assignment of 1/2 sack credits with some regularity. For instance, it's kinda f'ed up that a pass rusher who beats his blocker and forces a QB off his spot and into the waiting arms of a teammate who's blocker loses leverage because the QB is on the move gets squat credit for a 1/2 sack unless he is actually in on the tackle. The guy who actually made the play gets a puny "hurry" to his credit. But I digress. I ain't Elias Sports Bureau, the official source of NFL stats including subjective ones like sacks, so nobody gives a sh*t what I think about how sacks are counted. It should give you pause, however, when a guy like Fackrell ended up with 10 sacks last season. By the way, at the top of of p-f-r.com page you'll see a tab for "Football (college)". That's handy for quick checks around draft time, though the data is pretty basic. Small college players are not included. [/QUOTE]
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