Attempts that don't keep up with the average are not always a negative though. Take the following example.You're an NFL coach. For your upcoming game you can have WR1 who will have 5 catches for 50 yards and a TD. Or you can have WR2 who will have 5 identical catches of identical length for an identical 50 yards and TD... and on 5 additional plays he'll be open and catch the ball if it's thrown to him, but will only gain 1 yard per play for a net total of 10 catches for 55 yards and a TD. Which player should you take?You would obviously choose WR2. WR2 will do just as well on those first 5 catches, and another 5 catches for 5 yards is better than 0 catches for 0 yards on the same number of plays on the field.This can be true with targets as well. If two WRs have identical stat lines, it isn't necessarily a bad thing for the WR who has more targets. His catch percentage is lower, but assuming the QB is making competent decisions who to throw the ball to, he probably got open more than the other guy did.With RBs it can be a bit different since a WR has to get open but a RB just gets the carry regardless. But it's something to think about when penalizing a WR for a catch.
Yeah, WRs are different, which is why I'm focusing more on RBs and QBs. For a WR, the metric is targets, not receptions. Targets correlate to QB attempts, receptions correlate to QB completions. Completions and receptions are not inherently negative statistics. They aren't inherently positive, either- they're neutral. Targets and attempts are the negative stats. I also agree that WRs are more at the mercy of the QB's decision-making skills, which again gets back to why I was focusing more on QBs and RBs. Larry Fitzgerald and Calvin Johnson both get a lot of targets that they have no chance of doing anything with just because they're Larry Fitzgerald and Calvin Johnson, and when in doubt, you go to Larry or Calvin.
'GroveDiesel said:
These are some serious mental gymnastics here. Don't pull anything.
RB1 has 15 carries for 60 yards and a score, with 5 first downs. RB2 has 40 carries for 60 yards and a score, with 5 first downs. Who had a better day?QB1 went 15/20 for 250 yards, 2 scores, and 0 interceptions. QB2 went 15/50 for 250 yards, 2 scores, and 0 interceptions. Who had the better day?Hell, just look at the stats we use to evaluate RBs and QBs- yards per attempt. How do you improve your YPA? By either getting more yards, or having fewer attempts. The very nature of the statistics that we use to evaluate players accepts the fact that attempts are a bad thing that should be penalized. We don't evaluate QBs with yards per TD. Why not? Because any stat where a player can do worse by scoring more TDs would be rightly rejected as a backwards, useless statistic. Because TDs are a good thing which should be rewarded, not penalized. And yet we have no problem with penalizing for attempts. Every wonder why? Hint: it has nothing to do with mental gymnastics.
This is still unbelievably wrong headed. Did the RB that had 10 carries for 50 yards have 1 carry for 49 and then 9 for 1? And did the RB that had 50 carries for 50 yards have 10 TDs from the 1 yard line and 10 first down conversions on 4th and 1?Not every carry has equal value and not every 3 yard carry has the same value or level of difficulty. A 3 yard carry on 3rd and 5 isn't as valuable as a 1 yard carry on 4th and goal at the 1. It's almost impossible to capture this in fantasy football. Actually, I'll amend that, it IS impossible to capture that in fantasy football.And the idea that carries or receptions are negatives because there is a finite number of plays is mind bogglingly wrong. A rush or reception for a first down doesn't subtract from the total number of possible offensive plays, it ADDS to them. Each one is worth an extra 4 downs. Putting a negative value on carries, passes and receptions is totally counter-intuitive and makes the scoring system even more removed from the real value on the football field.
Synesthesia: "if you hold all other stats constant and increase attempts, a player's performance becomes worse"GroveDiesel: "but what if first downs increase? What if TDs increase? Synesthesia: "then you aren't doing a good job of holding all other stats constant, now are you?"Synesthesia: "carries are negative because they are finite. Each one uses a play. They have the possibility of netting positive stats, such as first downs, but that doesn't mean that the carry is valuable, that means that the first down is valuable. Absent yardage, points, or first downs, carries are negative plays."GroveDiesel: "but carries can net first downs! And first downs increase the number of offensive plays!"Synesthesia: "which is a great argument for why first downs are valuable statistics, and a terrible argument for why carries are a valuable statistic. Saying first downs are a good thing and carries sometimes net first downs so carries are also by extension a good thing is the same as saying that interceptions are a bad thing and attempts sometimes net interceptions so attempts are by extension a bad thing."You're not following the rules here. HOLD ALL OTHER STATS CONSTANT. Imagine an RB ends his day with 20 extra carries. Each of those carries nets exactly 0 yards. Each of those carries nets exactly 0 points. Each of those carries nets exactly 0 first downs. Also, assume we're not in a situation where a team is trying to bleed the clock- say the game is tied. All the RB did was add 20 carries to his stat line- no yards, no first downs, no scores, no time of possession. Just 20 carries. Nothing else. Did those 20 extra carries make the RB's performance more or less valuable? Was there any value gained by running the back into the line 20 times without a single other stat to show for it? Was there any value lost by running the back into the line 20 times without a single other stat to show for it?If you hold all other stats constant and add 20 yards to an RB's total, he had a better day. If you hold all other stats constant and add 10 first downs to an RB's total, he had a better day. If you hold all other stats constant and add 3 TDs to a player's total, he had a better day. These are inherently positive statistics.If you hold all other stats constant and add 3 fumbles to an RB's total, he had a worse day. And yes, if you hold all other stats constant and add 20 carries to an RB's total, he had a worse day. These are inherently negative statistics. There exists a third set of statistics that is neither positive nor negative. I already mentioned completions and receptions. Broken tackles is another good example- the offense isn't any better off whether an RB had to break 10 tackles, or force 10 missed tackles, or simply took what was blocked on every play- the outcome of the play matters, the route the back took to achieve that outcome does not (although broken tackles are a skill and tend to indicate more talented backs). A whole host of derived statistics can end up on this list if they are the result of dividing one positive statistic by another (or one negative statistic by another): examples of such nonsense stats might include points per yard or TDs per first down. Finally, you have time of possession, which can be either positive or negative depending on game situation. ToP is also unique in that it's the only offensive statistic in all of football that is truly zero sum.Derived stats (I.e. stats that are a combination of two or more other stats, such as QB rating or YPA) can also be positive or negative. Any derived stat that arises from dividing a positive stat by a negative stat will be positive (example: yards per attempt). Any derived stat that arises from dividing a negative stat by a positive stat will be negative (example: fumbles per yard). As mentioned, derived stats resulting from a positive divided by a positive or a negative divided by a negative (or even real oddballs like a positive times a negative) tend to be neutral- or, rather, they can be either positive or negative depending on the relative strength of the base statistics.Circling back to the OP, this means that if someone wanted to make a scoring system that more accurately reflected reality, one would want to reward positive statistics, penalize negative statistics, ignore neutral statistics, and avoid derived statistics entirely (because otherwise one would wind up double-counting some of the positive or negative statistics- if you already reward yards and penalize attempts, there's no need to reward yards per attempt).Note that this post is strictly agnostic on whether creating a scoring system that more accurately reflected reality is a worthwhile endeavor.