WASHINGTON -- David Beckham can do lots of things with his feet. On Thursday, he realized he'd stuck one in his mouth. The English midfielder apologized to FieldTurf, which makes an artificial surface used in many stadiums. A day earlier, Beckham had said FieldTurf was one of the things that was "not right'' about Major League Soccer and that all of the league's games should be played on grass. "I have to apologize -- I didn't realize FieldTurf was actually a company,'' Beckham said. Adding to the embarrassment, Beckham admitted that he had actually purchased three FieldTurf fields for one of his youth soccer academies. "At that level, I think it's a great surface,'' he said. Beckham said his feelings haven't changed about the use of FieldTurf for MLS games because of the toll the harder surface takes on the body. Four of the league's 13 teams play their home games on an artificial surface. "I've been playing on grass since I was a young kid,'' he said.