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Using Substitution Patterns to Unlock More Goals

There are really four purposes for substitutions - injury, general fitness, protecting the lead, or making a comeback. For injury the bench needs a few guys that can play in multiple roles. Roger Levesque seems to be turning into one of those guys for the 2011 Sounders. General fitness comes into play when guys are just tired and so a one for one swap is used. Most often the Sounders used this with one of the forwards, or the right midfielder. O'Brian White, Mike Fucito and Lamar Neagle would look to be the ones to fit this mold.

When protecting the lead most managers start pulling offensive players and plugging in more defenders, thereby shifting the shape from 4-4-2 (and variants) to 5-4-1 or 4-5-1 with two holding. In 2010 we saw Tyrone Marshall used as a 3rd CB once, as well as Leo Gonzalez and James Riley brought on as defensive midfielders in an Open Cup match. Rarely will we see subs when ahead be used to extend the lead by adding offense.

But when offense is needed, particularly when down a goal prior to the 50th minute conventional wisdom is wrong according to a study by a Villanova professor of Management and Operations. In general substitutes come in too late, also the failure to use the 3rd sub is overly cautious when a team needs that goal. In a league like MLS with its high level of parity, picking up 1 point rather than zero and holding an opposing team to 1 rather than 3 can shift the final standings. His system essentially doubles the chances of scoring a goal late.

He concluded that if their team is behind, managers should make the first substitution prior to the 58th minute, the second substitution prior to the 73rd minute and the third prior to the 79th minute. Teams that follow these guidelines improve—score at least one goal—roughly 36% of the time.

But did the Seattle Sounders leave goals on the bench? Maybe. But only one.

There were six matches in all competitions where his rules would apply. Seattle scored in none of those. In two Sigi Schmid essentially followed the substitution strategy. In the other four he did not. Now if that one more goal had come in just the right match Seattle's position on the table would have nudged up by one. Tying New York Red Bulls would have both at 49 points with Seattle holding the tie-breaker in the overall table, but not the Playoffs. Hooray for 5th!

If that extra goal had happened in Champions League play against Marathon then Seattle would have finished third on the table edging that side in the standings. Hooray for 3rd!

So while it would certainly be useful to find more offense on the bench, and with this year's likely bench talent it will be there. It is unlikely that there will be a shift in the standings from this technique due to its limitations, but I'd still like more goals, and if seeing more of Fucito and White is the way to get there is the way to do it, even better.

Likely bench
Terry Boss - Keeper
Patrick Ianni - CB, CDM, RB
Michael Tetteh - LW, LB
Levesque - RB, RM, F, CM, LM
White - TF, WF, RW
Fucito - WF, LW, RW
Erik Friberg - CM, RM, LM

That's five of sevens subs that are essentially offensive in nature. Seeing them earlier can equal more goals. A single opportune goal means one more spot in the standings. Rather than see a sub at 65 and 75, lets see them at 58, 73 and 79, whether down a goal or not. More goals are always better. More time on the pitch for talent capable or nearly capable of starting will payoff later in the year.

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One of Evans/Friberg on the bench

Rather than 2 target forwards it might make sense to have a 2nd central midfielder. Both can cover multiple spots and provide extra offense.

by Dizzo on Feb 15, 2011 6:46 AM PST via mobile reply actions  

True

Also should account that early in season there will be no Jaqua

I am not a Supporter | I am not a Fan | I am a Sounder
Sounder At Heart

by Dave Clark on Feb 15, 2011 9:44 AM PST up reply actions  

Bench looks much more balenced with Friberg instead of Jaqua

Due to likely injuries, the team will probably never be faced with this decision, but I can’t see carrying both White and Jaqua on the bench if everyone is healthy. The bench seems way too forward heavy in that scenario.

by CMC_Stags on Feb 15, 2011 10:43 AM PST up reply actions  

Personnel Management

One problem with this type of analysis is that it does not take into account the personal side of personnel management. For better or for worse, a lot of players and the press will get pretty jaded if they are subbed out before the 60th minute. A lot of what I see in Sigi’s style is that he wants to instill confidence in a core group of players and he is very conservative with his substitutions so as not to undermine their confidence. You see the same thing in many of the Open Cup games where the starters for that day are the starters. Has Sigi ever pulled anyone at halftime (accepting injury) regardless of their first half performance? I can’t recall that he has.

by brokejumper on Feb 15, 2011 6:48 AM PST reply actions  

Not that I remember

He usually subs one player around the 60 minute mark.

by Dizzo on Feb 15, 2011 8:03 AM PST via mobile up reply actions  

There are three types of people

people who can count and people that can’t. :)

by lysander on Feb 15, 2011 8:02 AM PST reply actions  

That was fun

Table didn’t show in the editor. Didn’t show in the preview. Somehow showed in the spellchecker. Didn’t show in the editor. And then appeared in the published version after I left the house.

I am not a Supporter | I am not a Fan | I am a Sounder
Sounder At Heart

by Dave Clark on Feb 15, 2011 9:43 AM PST up reply actions  

Table?

I am not sure what table you are refering to. I was just poking fun at the first sentence:

There are really three purposes for substitutions –
injury,
general fitness,
protecting the lead,
or making a comeback.

by lysander on Feb 15, 2011 11:02 AM PST up reply actions  

Good idea marred by questionable research

This article in the WSJ really rubbed me the wrong way when it first game out. I agree with the premise that managers wait to long to make subs, but the problem is, we have no insight into how the research was actually done.

Some of the major questions I have are:
How are injury and red card substituions handled? The article makes it sound like the research treated all substitutions as voluntary, when that isn’t a realistic assumption to make, especially regarding pre-58th minute subs

Can you really compare sub patterns across leagues? Players have different fitness levels, the pace of the games are different, etc. Maybe you can, but I’d like to see it proved that you can combine sub patterns from different leagues before they are all lumped together.

Was the data separated out into training and test data? Did Myers just find a model that fits historical data really well? It would be nice to know if he segmented the data into two sets and used the test data to evaluate the model and know how accurate the model is based on that test data. He’s an academic so he probably did this, but the writing in the WSJ makes it sound like he didn’t.

Has anyone found a link to the original paper by Myers? SSRN’s search is broken at the moment.

by sarahrudd on Feb 15, 2011 8:04 AM PST reply actions  

I did a quick search

But I couldn’t find an online article of his paper online. In general, academics are pretty good about sharing drafts if you send them a polite email. You can find his contact information here=bret.myers@villanova.edu.

by Dizzo on Feb 15, 2011 8:41 AM PST up reply actions  

Why is an incomplete online article the researcher's fault?

This was a sidebar piece in the WSJ, not an abstract in an academic journal. Even if the writer wanted to include more information about the study process, it was probably edited for space. Or it’s a poorly written article, which is the journalist’s fault. Your questions are legitimate, but you should read the paper first before impugning Dr. Meyer’s methodology by calling it “questionable research.”

You will hear us on Brougham, you will hear us on Occidental, you will hear us on King. We are all around you, there is no escape.

by 108Ultra on Feb 15, 2011 8:53 AM PST up reply actions  

Good point

I should have stated more clearly in the title that it’s questionable research reporting rather than the research quality itself which is unknown. The WSJ reporter is presenting the research like it is fact when its unclear if this research has gone through the regular rigors of most academic studies. Shame on the reporter. I’ll follow up with Dr. Myers. Thanks for the info.

by sarahrudd on Feb 15, 2011 10:25 AM PST up reply actions  

Well

The conclusion, at least that the article stated, was “Dr. Myers said the rule shows that coaches underestimate the significance of fatigue late in a match, which causes them to overvalue starters and undervalue substitutes.” How he identified fatigue as a cause while only looking at statistical data from matches in 2010 is beyond me. Last I checked there is no statistic that indicates fatigue. It is an interesting correlation, but let’s not confuse that with causation. The latter is what you need to know more about to make more intelligent decisions.

-Ben R.

by reesebw on Feb 15, 2011 9:02 PM PST up reply actions  

It's hard to say much of anything based on what was reported

It’s really easy to imagine this being a selection bias effect, where teams who sub earlier are subbing earlier because their bench players are better than bench players on teams which sub later. In that case, it wouldn’t really help to just start subbing players earlier. That is, it’s not clear that fatigue is the main factor at work here.

Reports like this drive me crazy, because the result in and of itself doesn’t really mean anything unless we know more about how the conclusion was reached.

by ubelmann on Feb 15, 2011 11:04 AM PST reply actions   2 recs

Another reason early subs might be used...

Dealing with a busy schedule and multiple competitions. It could be that the teams studied who subbed earlier tended to be subbing early because they wanted certain players to be available for multiple competitions. Competitions like Champions League or Europa League. And it would stand to reason that those teams just have a better chance of scoring in their league play than other teams, because they were good enough to qualify for other competitions.

by ubelmann on Feb 15, 2011 11:08 AM PST reply actions  

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