Earlier this season we announced our partnership with Sportradar to bring advanced offensive statistics to Pro Football Reference. We are happy to announce that for the 2019 season and beyond, we have now added additional advanced passing statistics to help provide context and key breakdowns for the quarterbacks around the league.

We can use MVP candidate Lamar Jackson as an example of the new statistics provided in the Advanced Passing table of quarterback pages. In the Accuracy tab, you'll now see batted passes and spikes in addition to previously added stats such as throwaways and bad throws. We also show passes on target and on target percentage, which ignores spikes and throwaways. Jackson has a 75.4 on target percentage in 2019.

In the Pressure tab of the Advanced Passing table, in addition to previously provided stats such as times blitzed, times hit, and scrambles, we also have pocket time for 2019. Jackson in 2019 has had on average 2.6 seconds in the pocket between the snap and throwing the ball or pressure collapsing the pocket.

In the Play Type tab of the Advanced Passing table, we provide breakdowns for run-pass option plays and play-action situations. Jackson has run 106 RPO plays this season, passing on 51 and rushing on his own for 52 of them. Jackson has run 87 play-action plays, throwing for 559 yards on those plays.

Finally, we already provided air yards information, but in order to paint a more complete picture we are now showing both intended air yards, which includes all pass attempts, and completed air yards. That information is displayed in the dedicated Air Yards tab of the Advanced Passing table.

In addition to displaying this information at the individual level, we have also implemented this tabbed approach on the team advanced stats page. As a team, the Saints lead the league in on target percentage at 81.9%. In terms of pocket time, the Chargers, Chiefs and Bengals trail with just an average of 2.2 seconds. Unsurprisingly, the Ravens and Cardinals have both run over 150 RPO plays, while no other team has even 100.

If you have any questions or suggestions, feel free to contact us through our feedback form or Pro Football Reference's official Twitter account. Thanks for following PFR!

With 6 new debuts this season, there have now been exactly 500 people in NFL history to be credited as head coach of a NFL team. Many of those coaches had to work their way up the ranks or prove their success elsewhere before getting their chance at the top position in the NFL. For a while, Pro-Football-Reference had full coaching history on the pages of modern coaches such as Bill Belichick, so you could trace his rise from a special assistant on the 1975 Colts to where he is today. However, we did not include that information for many historical coach profiles until now, as we have now filled in the coaching history of every head coach in NFL history where applicable.

While in today's environment it's more common to hire a coach with NFL assistant experience over a college coach, in the past many great coaches jumped directly from college to the NFL. Paul Brown rose from nearly a decade coaching at Massillon Washington High School to three years at Ohio State, and following two years coaching the Naval Station Great Lakes team got the call to coach the nascent Cleveland franchise. Sid Gillman was a head coach at Miami of Ohio and Cincinnati before getting his first NFL head coaching spot with the Los Angeles Rams.

The addition of this information also helps fill out NFL coaching trees, as displayed by the Employed and Employed By tables on our coach pages. Looking at Brown's Employed table, he employed future Hall of Fame coaches Weeb Ewbank (as a tackles coach) and Bill Walsh (as a QB and WR coach). A common narrative today is how the assistants of Bill Belichick have not gone on to solid head coaching careers, and similar things were said about Vince Lombardi's coaching branches, which included folks like Bill Austin, Norb Hecker and Mike McCormack.

Assistant coaches did not become the norm until around the 1940s, although even in the early days of the NFL there were cases such as Dim Batterson of coaches assisting before rising to the top post. In those days player-coaches were common, and most of them never went on to a different coaching position, which is why those coaching history tables will mostly remain bare. There were exceptions, such as Bob Dove who was a player-coach for the Chicago Rockets and would go on to take assistant positions with the Lions and Bills before becoming a long-time assistant for Youngstown State. College coaches were also common in the early days of the NFL, such as Ed Robinson, who began his coaching career way back in 1896 with Nebraska before eventually coaching the Providence Steam Roller for one season.

We give thanks to the Professional Football Researchers Association and the work of John Maxymuk who had done extensive research on NFL head coaching history, along with additional newspaper verification by Alex Bonilla. In the future we may also fill in the coaching history of offensive and defensive coordinators we are currently lacking that information for. If you have any corrections or additional information to share or suggestions, feel free to contact us through our feedback form or Pro Football Reference's official Twitter account. Thanks for following PFR!

Sports-Reference has added a feature to tables that will make it a lot easier to compare teams and players in an easily scannable fashion. Now, when you select a row on a table, a popup will appear with a button: "Show Only Selected Rows". Highlight the rows you want to isolate, and once you're ready, click the button. The site will then fade out the unselected rows so the only rows displayed are the ones you highlighted. If you want to return to viewing the full table, just click on the "Show All Rows" button.

This feature applies to any tables that don't have row summing capabilities. This will work on both desktop and mobile. You can see a video of the feature in action at Baseball-Reference's Twitter account. You can contact us through our feedback form if you have any questions or suggestions.

Last month on the Sports Reference Blog we posted about the addition of advanced statistics at the individual level on offense and defense for 2018 and 2019. We've followed up on that addition and also calculated those advanced statistics at the team level and made season tables to make league-wide comparisons easier. You can find team advanced offensive statistics by going to the Other tab on the league season page and clicking on the Advanced Stats link. Here's a link to 2019 team advanced offensive statistics.

Team advanced defensive statistics can be accessed by going to the main Team Defense page, which is linked in the Defensive Stats tab of the league season page. Here's a direct link to the Team Advanced Defense table for 2019. Some team statistics we include here that aren't currently calculated at the individual level include blitz rate (blitzes per dropback), QB knockdown rate (knockdowns per pass attempt) and pressure rate (pressures per dropback).

Also, we were already including advanced offensive stats at the game level in box scores, but we've also recently added advanced defensive stats in box scores as well. For example, here's a link to the Advanced Defense table for the Chiefs-Colts Week 5 matchup. A reminder that advanced statistics across the site don't fully update until the Wednesday morning following the weekend's games.

We are continuing to expand our statistical coverage for recent seasons, so we're always open to feedback on how to best serve what you most want to know. If you have any questions or suggestions, feel free to contact us through our feedback form or Pro Football Reference's official Twitter account. Thanks for following PFR!

At the beginning of the 2019 season, Pro Football Reference announced the addition of advanced offensive statistics, provided by Sportradar, the NFL's exclusive distributor for official real-time scores, player statistics and play-by-play data. This week, we have also incorporated advanced defensive statistics from Sportradar. These stats include:

* Times targeted as a defender
* Receiving yards per reception allowed
* Completion percentage and passer rating allowed on targets
* Average depth of target as a defender
* Yards after catch allowed
* Times brought on a QB blitz
* QB pressures (hurries + knockdowns + sack plays)
* Missed tackles

We've added these statistics to 2018 players and will be updating them for 2019 as well. These statistics are provided via game charting and will be populated by the Wednesday following completion of the game, if not earlier. If you have any questions or suggestions, feel free to contact us through our feedback form or Pro Football Reference's official Twitter account. Thanks for following PFR!

In a huge addition for 2019, Pro Football Reference will now be bringing you advanced stats provided by Sportradar, the NFL's exclusive distributor for official real-time scores, player statistics and play-by-play data. In addition to the usual stat coverage you've come to expect from us, we're adding:

* Air yards passing and receiving - indicating how far a pass traveled in the air before it was caught.
* Yards after catch - receiving yards minus air yards, how far a receiver ran after catching the ball
* Receiving drops - receptions missed on balls given a reasonable (non-Odell Beckham-level) effort
* Bad throws by QBs - throws that weren't catchable with normal effort
* Times QBs were blitzed - either 5+ players rushed the QB or a DB rushed the QB
* Times QBs were hurried - defined as a situation when the QB is forced to throw the ball earlier than intended or is chased around/out of the pocket as the result of defensive pressure
* Times QBs were hit - occurs when the QB hits the ground after a throw, not marked on a sack play
* Quarterback scrambles and yards on scrambles (vs. designed quarterback runs)
* Yards before and after contact - defined as the number of yards gained after first contact from a defender
* Broken tackles, both rushing and receiving - the number of times that the runner does something significant to get past/through a defender

We've added these stats to the 2018 passing, rushing, and receiving pages, as well as on player pages and team pages and will be updating them on 2019 pages as soon as games start. These stats are provided via game charting and will be fully populated by the Wednesday following completion of the game, if not earlier. Look for more stat additions as the season continues!

On Pro Football Reference, one of the many statistics we track historically are pick sixes thrown. We previously had this available back to the 1970 season. We have extended that coverage and now have pick-six passers back to the 1950 season. With this addition, we have also updated the single-season and career leaderboards as well as pick six logs available in quarterbacks' player pages.

A special thanks to Sam Istvan for the research done to make this addition. If you have any questions or suggestions, feel free to contact us through our feedback form.

On Pro-Football-Reference we have quarterback hit statistics back to 2006 and tackles for loss statistics back to 1999, available on defensive players' individual profiles. We also have those statistics at the team level, and we recently added those fields in our team defense section for league seasons when those statistics are available.

For example, viewing the Team Defense section for the 2018 season, you can see the Arizona Cardinals recorded 99 tackles for loss this year, best in the league in that category. Meanwhile, the 2018 Philadelphia Eagles recorded 133 QB hits, more than any other team this season.

If you have any questions or suggestions, feel free to contact us through our feedback form.

In past blog entries, we announced the addition of starter and substitute data for every quarterback since 1950 to Pro-Football-Reference, and how that allowed for the Player Game Finder to now have the capability for "First x QB Starts" searches.

Another addition that stems from this added starting QB data is a section in quarterbacks' splits pages that easily lays out their statistics just in games they started. This can be a useful additional piece of information for quarterbacks who played a substantial number of games as both a backups and starter during their career, such as Gus Frerotte or Don Strock. It can also help to make the winning record of a quarterback without their appearances as a holder or backup clearer on the splits page; one modern case of this is Tony Romo.

If you have any questions or suggestions, feel free to contact us through our feedback form.

Pro-Football-Reference has added preseason Super Bowl odds back to 1977, as well as preseason over/unders on win totals back to 1989. This information can be found on a team's season page in their information profile. For example, you can go to the 2011 Eagles page and quickly spot they were +800 to win the Super Bowl before the season, and that the over/under for their win total was set at 10.5. (They would go on to finish under that year.)

You can also see the preseason Super Bowl odds and over/unders for all teams in a season by going to a league season page, and then following the Preseason Odds link located in the Other tab. Here's a link to the 2018 odds table, where you can spot the Super Bowl-winning Patriots having the best odds before the season and the highest-set over/under (which they pushed on).

One question that can be answered with this information is: who were the unlikeliest Super Bowl winners based on these preseason odds? Here's a look at the top 10 longest odds since 1977.

Also, here's a look at the teams since 1989 that outperformed their preseason over/unders the most.

A special thanks to sportsoddshistory.com for contributing to this addition to our site. If you have any questions or suggestions, feel free to contact us through our feedback form. Also, please keep your eyes peeled for similar content coming to our other sites in the future.