the shot was from Szoboszlai not Wirtz
Regarding Wirtz hes playing with players hes never played before with it.. will take time for him to learn their play as well.. He does look a bit physically weak. But i think as the season wears on he'll adjust.
I think personally hes a false 9 come 10. and will be best closer to goal. rather than off the front 3. Firmino type player and those with long memories. Took Bobby a very long time to get his first goal.. and no doubt had his doubters