One More Solo said:There was grass poking through the stadium floor so unless the grass is uber long it was in contact with the pitch. This is why stadiums host gigs in the sport off-season so they can replace the pitch, I can't imagine there's a game at Wembley till Octoberish so loads of time.
Nah, the grass is really long, haven't you seen 28 Weeks Later?

Most really big, modern stadiums have absolutely rubbish playing surfaces, especially ones with closable roofs- bad light and air conditions. So no real surprise here.