Thiago Alcántara didn't play and hence wasn't held responsible for this streak of bad games. As everybody else was rated down, Thiago's earlier games are seen in new light and his GI should improve accordingly. Just it didn't. It even fell marginally by 0.2. The reason for this is that the algorithm identified another, more important factor to explain the results: Thomas Müller. Here are the Bayern games in April split into the parts with and without Thomas Müller. Do you see what we mean by "Goalimpact Machine"?
|Goal Differential||without Müller||with Müller|
Thomas Müller: Mover of the Month April 2014
Update: I had the first ManU games the wrong way round. So actually, this was one period without Müller that had a positive goal differential. The overall picture is unchanged, though.