He was good overall except penalty for arm clearly outstretched and high and missed yellow early on to manage the derby. 7.8 from the observer overall
You do realise that a 7.8 means one clear and important error, otherwise 8.0 to 8.2, and by clear and important error they mean an incorrect key match decision (KMD). Average 7.8 at the end of the season and you would be marooned at the bottom of the merit table by some distance as it essentially means you have made in an incorrect KMD in every game and shouldn't be at that level. Under previous laws that could be a penalty, but not under this season's as his arm was where it would be expected for the action he was making, so nowhere near an incorrect KMD.
The marking scale can be seen here if anyone is interested. Essentially you start on 8.3, an incorrect KMD drops you to 7.9. A 7.8 would be a satisfactory performance with small areas for improvement along with one incorrect KMD. The majority of marks are 8.3 and 8.4, to get over 8.4 you need to have correctly made big decisions and not got anything wrong, to get 9 or over you need to have incriminating photos of the observer 😂
http://refereeingacademy.blogspot.com/p/uefa-referee-marking-scale.html