France's Olivier Giroud sits on the pitch during the Euro 2016 Group A soccer match between France and Albania at the Velodrome stadium in Marseille, France, Wednesday, June 15, 2016. (AP)
UEFA's tournament director says some fields at the European Championship have not been good enough.
Martin Kallen says recent heavy rain is a reason the grass in Marseille is not as good as UEFA wants.
Stadiums which stage non-soccer events - including the Stade de France and in Lille - have longer-standing issues with field quality.
Kallen says ''we have problems and we do our utmost.''
In Marseille, new turf was laid a month ago but Kallen says ''it could not take enough roots'' because of rain.
A new roof at the renovated Stade Velodrome also deprives the surface of sunshine and drying winds.
Kallen says playing surfaces are better at stadiums ''where only football takes place,'' like Parc des Princes in Paris.
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