Beckham created Edson Buddle's winner in the 1-0 victory.
Beckham, who was replaced in the 76th minute by Jovan Kirovski, was introduced to a Philadelphia tradition by many of the PPL-record 18,779 in attendance - being booed every time he touched the ball.
"Without a doubt, it is the way it should be," Beckham said. "That is the atmosphere in Europe when you go to an away game, and I really enjoyed it."
He also enjoyed the previous evening at the baseball. Beckham attended the Phillies game in two parts. He saw the first few innings, left for a team dinner, and returned for the final few innings to see Roy Halladay finish off his no-hitter.
"To be part of that historical night was really special," Beckham said.