In 2005, Major League Soccer re-introduced the name for a series of professional matches in the United States In 2005, Major League Soccer (MLS) began the World Series of Soccer (WSS), a series of games pitting MLS and big name international clubs against each other.
The WSS was a round robin style competition between two MLS teams: D.C. United and Chicago Fire as well as two European powerhouses: Chelsea of the English Premiership and Milan of Italy's Serie A.
July 12 D.C. United 4–0 Celtic (Scotland) July 12 Chicago Fire 1–2 Club América (Mexico) July 12 Los Angeles Galaxy 0–1 Necaxa (Mexico) July 19 New England Revolution 1–1 Celtic (Scotland) July 19 FC Dallas 2–0 Tigres UANL (Mexico) July 23 Chivas USA 1–1 (5–4 PK) Club América (Mexico) July 26 Columbus Crew 1–1 Everton (England) August 9 D.C. United 1–1 Real Madrid August 12 New York Red Bulls 1–4 FC Barcelona (Spain) August 12 Real Salt Lake 0–2 Real Madrid (Spain) The World Series of Soccer returned in 2007 as a four-team affair, primarily used to promote the arrival of English footballer David Beckham to the United States.
His Los Angeles Galaxy had a round-robin with Chelsea of the Premier League, the Suwon Samsung Bluewings of the K League, and the UANL Tigres of the Primera División de México.
UANL Tigres won the competition by virtue of goal difference over Chelsea.