Schalke 04: substituting an inactive but efficient player

This is an example of player A being substituted by player B, while it would have been better to substitute player C by player B. (In this example Max Meyer is player A, Benjamin Strambouli is player B and Allessandro Schöpf is player C.)

Schalke 04 lost to Ajax with 2-0 in the game of 13-4-2017. But not only that, Ajax dominated the game for almost the whole match. Although the first substitute did improve Schalke 04’s play, it could have been better because Markus Weinzierl, the manager of Schalke 04, made the mistake of substituting an inactive but efficient player rather than an active but inefficient player. Case in point: Markus Weinzierl substituted Max Meyer whose efficiency during the match is shown in the graph below. Max Meyer was playing mediocre, but Allessandro Schöpf was even playing worse as we will see.   

Max Meyer - Schalke 04 in Ajax vs Schalke 04 13-4-2017 (2-0)

For Benjamin Stambouli which resulted in an increase of the team efficiency (of course Stambouli should have been selected for the starting eleven in the first place given his higher starting efficiencies to begin with):

Benjamin Stambouli - Schalke 04 in Ajax vs Schalke 04 13-4-2017 (2-0)

Yet there was a better option for substitution:

Allessandro Schöpf in Ajaxe vs Schalke 04 13-4-2017 (2-0)

If you look at their relevant actions we measured during the match you can see that Meyer was less involved than Schöpf. Nevertheless, his efficiency is higher. What this means is that it is costing Schalke 04 less to leave Meyer on the pitch than that is costs to leave Schöpf on the pitch. Keeping Schöpf led to much more loss of ball possession than Meyer would have had.

Here are the details of what we measured:

Schöpf Meyer
Defensive Error INTERCEPTION
INTERCEPTION Defensive Error
Defensive Error Interrupt
ALLOW GOAL Minor Bad Action
Defensive Error Interrupt
INTERCEPTION Minor Bad Action
INTERCEPTION Minor Bad Action
Defensive Error
Minor Bad Action
Defensive Error
Interrupt
Defensive Error
Minor Bad Action
Minor Bad Action
Defensive Error
Minor Bad Action
INTERCEPTION
Minor Bad Action
Minor Bad Action
Minor Bad Action
INTERCEPTION
Interrupt
Minor Good Action
Minor Bad Action
Minor Bad Action
Minor Bad Action

 

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