Jimmy Smith

Wide Receivers and Weighted Team Pass Attempts

by Chase Stuart on April 10, 2014

in Receiving, Statgeekery

Megatron at his best.

In his seven-year career, Calvin Johnson has already recorded 9,328 receiving yards. And for those curious about these sorts of things, he’s the career leader in receiving yards per game at 88.0, too. But Johnson has also benefited greatly from playing on teams that have thrown a weighted average of 635 pass attempts per season.

What is a weighted average of team pass attempts? I’m defining it as an average of pass attempts per season weighted by the number of receiving yards by that player. Why use that instead of a simple average? When thinking about whether a receiver played for a run-heavy or pass-happy team, we tend to think of that receiver during his peak years. If he caught 10 passes for 150 yards as a rookie on a very pass-happy team, that should not be given the same weight as the number of pass attempts his team produced in his best season. For example, here is how I derived the 635 attempt number for Megatron.

Twenty-one percent of his career receiving yards came in 2012, when Detroit passed 740 times (excluding sacks). Therefore, 21% of his team pass attempts average comes from that season, while 18% comes from his 2011 season, 16% from his 2013 season, and so on. In the table below, the far right column shows how we get to that 635 figure: by multiplying in each season the percentage of career receiving yards recorded by him in that season by Detroit’s Team Pass Attempts.

Yr	RecYd	TPA	Perc	TM * %
2013	1492	634	16%	101.4
2012	1964	740	21.1%	155.8
2011	1681	666	18%	120
2010	1120	633	12%	76
2009	984	585	10.5%	61.7
2008	1331	509	14.3%	72.6
2007	756	587	8.1%	47.6
Total	9328	4354	100%	635.2

There are 121 players with 7,000 career receiving yards. Unsurprisingly, Johnson has the highest weighted average number of team pass attempts, which must be recognized when fawning over his great raw totals. Marques Colston is just a hair behind Johnson, but no other player has an average of 600+ team pass attempts.

The table below contains data for all 121 players (by default, the table displays only the top 25, but you can change that). Here’s how to read it, starting with the GOAT: Jerry Rice ranks first in career receiving yards, and he played from 1985 to 2004. Rice played in 303 games, gained 22,895 receiving yards, and his teams threw a weighted average of 547 passes per season. Among these 121 players, that rank Rice as playing for the 25th highest or most pass-happy team. Rice also averaged 76 receiving yards per game, which ranks 5th among this group. [continue reading…]

Tagged as: Andre Johnson, Calvin Johnson, Jerry Rice, Jimmy Smith, Michael Irvin, Paul Warfield, Steve Smith, WR Project, WR Ranking Systems

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True Receiving Yards, Part I

by Chase Stuart on August 15, 2013

in Statgeekery

One of many Rams greats to wear #29.

As you guys know, Neil Paine is the man. Here’s the latest reason: he came up with a metric called True Receiving Yards, the latest in a long line of thoughts in our Wide Receiver Project. So, what are True Receiving Yards?

We start with Adjusted Catch Yards, defined as 5 * Receptions + Receiving Yards + 20 * Receiving Touchdowns.

1) Then, we convert each player’s Adjusted Catch Yards to the same scale as pure receiving yards using the following formula:

Adjusted Catch Yards * League Receiving Yards / League Adjusted Catch Yards

2) Next, we adjust for how often the receiver’s team passed. We use the following formula:

[Result in Step 1] * League_Avg_Team_Pass_Attempts / Team_Pass_Attempts

For purposes of this post, Team Pass Attempts include sacks.

3) Then we adjust for the league passing environment, by using this formula:

[Result in Step 2] * by (214.54/Avg_Team_Receiving_Yards_Per_Game).

Why 214.54? Because that’s how many yards the average NFL team has passed for in each season since 1970.

4) Finally, we need to adjust for schedule length. This one’s pretty simple:

[Result in Step 2] * 16 / Team Games

As it turns out, the single-season leader in True Receiving Yards is….. Harold Jackson for the 1973 Rams. That will probably surprise some folks; heck, it surprised me. So let’s walk through Jackson’s season by comparing it to Calvin Johnson’s 2012. Jackson caught 40 passes for 874 yards and 13 touchdowns. That gives him 1,334 Adjusted Catch Yards, while Megatron’s 122-1964-5 translates to 2,674 Adjusted Catch Yards, more than twice what Jackson produced.

1) First, we need to convert those ACY numbers into receiving yards. In 1973, that conversion ratio is 65.5%, and in 2012, it was 64.5%; this means Jackson is credited with 874 receiving yards (ironically, his actual number) while Johnson is pushed down to only 1,725 yards. This is because Johnson had a ton of yards but only five touchdowns. In other words, based on his receptions, receiving yards, and receiving touchdowns, Johnson was more like a 1,725-yard receiver last year.

2) Jackson’s Rams had just 288 Team Pass Attempts, while the average team in 1973 averaged 373.3 pass attempts. So we need to bump Jackson up by 29.6%, which would give him 1,132 receiving yards. The 2012 Lions had 769 Team Pass Attempts compared to a league average of 592.4; therefore, we need to give Johnson credit for only 77% of his ACY, bringing him down to 1,329 receiving yards.

3) Next, we adjust for league environment. In 1973, the average team passed for 159 yards per game, which means we need to bump Jackson up by 34.6% (the result of 214.54 divided by 159); this gives him 1,524 receiving yards. For Megatron, since the average team in 2012 passed for 246 yards per game, we need to multiply his result in step 2 by 87.2%, leaving him with only 1,159 receiving yards.

4) For Calvin Johnson, that’s it: he is credited with 1,159 True Receiving Yards, after reducing his numbers for playing in a pass-happy offense, playing in a pass-happy era, and not having many touchdowns. For Jackson, his 1,524 gets pro-rated to a 16-game season, giving him 1,742 True Receiving Yards.
[continue reading…]

Tagged as: Calvin Johnson, Cliff Branch, Harold Jackson, Jimmy Smith, Steve Smith, WR Project, WR Ranking Systems

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Jimmy Smith is one of the best wide receivers in NFL history

by Chase Stuart on March 4, 2013

in Receiving

Smith kept a low profile during his playing days.

Jacksonville’s Jimmy Smith was first eligible for the Hall of Fame in 2011. He was cut early in the process, failing to be one of the 26 semifinalists selected. A year later, he again failed to make the cut to 26, and was shut out at the same stage a few months ago, too.

To the extent that the Hall of Fame is supposed to mirror the consensus view, Smith’s absence from Canton is justified. But that’s only because he’s tragically underrated. If you take a normative view of how the Hall of Fame should operate, then the lack of traction Smith’s case has made is downright appalling.

No wide receiver of his caliber has ever been so overlooked. Even Art Monk was a finalist for the HOF every single year he was eligible until being inducted in 2008. Ditto Cris Carter, who was a finalist the first five years he was eligible before being selected for the Class of 2013. Tim Brown has been a finalist each of the first four years in which he’s been eligible. Smith, on the other hand, appears to have fallen through Canton’s cracks.

When I came up with my era-adjusted career rankings, Smith came in as the 12th best wide receiver in history. The issue with Smith has never been production but perception. Let’s go through the reasons Smith’s been overlooked.
[continue reading…]

Tagged as: Jimmy Smith

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