Sorry for quotting myself, but this thing continues:
Semis:
France: header after a corner.
So, till now, 12 goals were scored in quarters and semis between equally strong teams:
6 headers after corners/set pieces (France, Belgium, England, Croatia, Russia in 1/4s and France in 1/2s)
3 headers from an open play (Kramaric, Delle Ali, Renato)
3 long range shots from the outside of a box (Cheryshev, Griezmann, De Bruyne)
0 goals in Barca's style, through the middle, inside of a box, against a parked bus
So, out of 12 goals scored: 6 were headers after corners.
Further, out of 12 goals scored, 9 were headers (6 after corners and 3 after crosses from an open play).
9 headers vs 3 goals with feet.
In 5 matches and 480 minutes of football, nobody scored "a classical" goal with feet from inside of a box from an open play.
It is harder and harder to score this type of goals against strong teams, it seems...
we need players to play 1-2 with Messi through the middle