You are right about Onyewu but I would go farther and suggest the competitive focus is incorrect in MLS. The European Cup of MLS or the SupportersShield shows the players who are on top of their game, not the LEague cup called the MLS Playoffs.
Beckham, who left Spanish giants Real Madrid for Major League Soccer in the United States in 2007, scored for the Galaxy in the 2-1 win over FC Dallas on Sunday that earned the club the Supporters' Shield for Major Soccer League's top point-scoring team.