The World Series of Football -- the four-team tournament in which David Beckham is scheduled to debut for the Los Angeles Galaxy against Chelsea on Saturday -- is just one of several tournaments involving foreign clubs being played in the United States.

In the next two weeks, 30 clubs representing 14 countries are scheduled to play on U.S. soil. Mexico leads all countries with no less than 13 clubs are playing games here. Six other foreign clubs were here last week.

Copa Panamericana, a four-day tournament involving six Latin America teams, began play at the University of Phoenix Stadium on Monday night. Libertadores Cup champion Boca Juniors beat Alianza Lima of Peru, 2-0, in the opener.

The World Series of Football kicks off Tuesday night at the Home Depot Center. The Galaxy -- without Beckham -- faces Mexico's Tigres, and Chelsea meets Suwon Blue Wings of South Korea.

The SuperLiga, which features four MLS and four Mexican clubs, begins July 24 at the Home Depot Center.

UEFA Cup champion Sevilla will join Wisla Krakow of Poland, Toluca of Mexico and Reggina of Italy at the Platinum One Chicago Trophy International Tournament, scheduled to be played July 27 and 29 at Chicago's Soldier Field.

FOREIGN CLUBS:
Mexico (13)
Atlas
Club America
Cruz Azul
Guadalajara
Jaguares
Monterrey
Morelia
Pachuca
Santos
Tapatio (D2)
Tigres
Toluca
UNAM

England (4)
Aston Villa
Chelsea
Everton
Preston North End

Argentina (2)
Argentinos Juniors
Boca Juniors

Colombia
Deportivo Cali

Guatemala
Marquense

Honduras
Olimpia

Italy
Reggina

Jamaica
Waterhouse FC

Peru
Alianza Lima

Poland
Wisla Krakow

Scotland
Celtic

South Korea
Suwon Blue Wings

Spain
Sevilla

Venezuela
Caracas FC