<P> The pitch size, as lined for association football, is 115 yd (105 m) long by 75 yd (69 m) wide, slightly narrower than the old Wembley, as required by the UEFA stadium categories for a category four stadium, the top category . </P> <P> Since the completion of the new Wembley, the pitch has come into disrepute since it was described as being "no good" and "not in the condition that Wembley used to be known for" by Slaven Bilić before the game between England and the team he managed, Croatia . It was confirmed when the pitch was terribly cut up during the game, which was blamed by some as the reason England did not qualify for UEFA Euro 2008 . The Football Association admitted in April 2009 after the FA Cup semi-finals that improvements are needed to the Wembley pitch after criticism of the surface by Sir Alex Ferguson, Arsène Wenger and David Moyes . The grass has been relaid ten times since the stadium re-opened in 2007 and was relaid again in the summer of 2009, ahead of the 2009 Community Shield . </P> <P> In March 2010, the surface was relaid for the 10th time since 2007, when the stadium was built . In April 2010, the pitch was again criticised following the FA Cup semi-finals, during which the players found it difficult to keep their footing and the surface cut up despite the dry conditions . The then Tottenham Hotspur boss, Harry Redknapp labelled it a "disgrace" after his side's semi-final defeat to Portsmouth . After the 2010 FA Cup Final, Chelsea captain John Terry said, "The pitch ruined the final . It's probably the worst pitch we've played on all year . It was not good enough for a Wembley pitch ." It was relaid with Desso semi-artificial pitch, ahead of the 2010 community shield game between Chelsea and Manchester United . Michael Owen, who previously criticised the pitch for causing him injury, said that it was much improved . </P> <P> The stadium roof has an area of 40,000 m (430,000 sq ft), of which 13,722 m (147,700 sq ft) is movable . The primary reason for the sliding roof was to avoid shading the pitch, as grass demands direct sunlight to grow effectively . The sliding roof design minimises the shadow by having the roof pulled back on the east, west and south . Angus Campbell, chief architect, also said that an aim was for the pitch to be in sunlight during the match between the beginning of May and the end of June, between 3 pm and 5 pm, which is when the FA and World cups would be played . However, it was mentioned during live commentary of the FA Cup Final in 2007 that the pitch was in partial shade at the start at 3 pm and also during the match . </P>

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