I have proof that the US used their B-Team at the 2009 Gold Cup and Mexico used their A-Team?

Mexico's Gold Cup Squad: 1 GK Guillermo Ochoa 2 DF Jonny Magallón 3 DF Ismael Rodríguez 4 DF Edgar Dueñas 5 DF Fausto Pinto 6 MF Gerardo Torrado 7 MF Alberto Medina 8 MF Israel Castro 9 FW Omar Bravo 10 FW Guillermo Franco 11 FW Carlos Vela 12 GK José de Jesús Corona 13 MF Pablo... show more Mexico's Gold Cup Squad:
1 GK Guillermo Ochoa
2 DF Jonny Magallón
3 DF Ismael Rodríguez
4 DF Edgar Dueñas
5 DF Fausto Pinto
6 MF Gerardo Torrado
7 MF Alberto Medina
8 MF Israel Castro
9 FW Omar Bravo
10 FW Guillermo Franco
11 FW Carlos Vela
12 GK José de Jesús Corona
13 MF Pablo Barrera
14 FW Miguel Sabah
15 DF José Antonio Castro
16 FW Carlos Esquivel
17 MF Giovani Dos Santos
18 FW José María Cárdenas
19 MF Luis Miguel Noriega
20 MF Israel Martínez
21 DF Juan Carlos Valenzuela
22 DF Efraín Juárez
23 GK Óscar Pérez

Mexico's World Cup squad:
1 GK Óscar Pérez
13 GK Guillermo Ochoa
23 GK Luis Ernesto Michel
2 DF Francisco Javier Rodríguez
3 DF Carlos Salcido
4 DF Rafael Márquez
5 DF Ricardo Osorio
12 DF Paul Aguilar
15 DF Héctor Moreno
16 DF Efraín Juárez
19 DF Jonny Magallón
20 DF Jorge Torres Nilo
6 MF Gerardo Torrado
8 MF Israel Castro
18 MF Andrés Guardado
7 MF Pablo Barrera
9 FW Guillermo Franco
10 FW Cuauhtémoc Blanco
11 FW Carlos Vela
14 FW Javier Hernández
17 FW Giovani dos Santos
21 FW Adolfo Bautista
22 FW Alberto Medina

Hmmm...looks familiar doesn't it?

Here's the US Gold Cup squad:
1 GK Troy Perkins
2 DF Heath Pearce
3 DF Clarence Goodson
4 DF Chad Marshall
5 MF Kyle Beckerman
6 DF Steve Cherundolo
7 MF Robbie Rogers
8 MF Logan Pause
9 FW Charlie Davies
10 MF Stuart Holden
11 FW Brian Ching
12 DF Jimmy Conrad
13 MF Colin Clark
14 DF Michael Parkhurst
15 MF Sam Cronin
16 DF Jay Heaps
17 FW Kenny Cooper
18 GK Luis Robles
19 MF Freddy Adu
20 FW Santino Quaranta
21 MF Brad Evans
22 MF Davy Arnaud
23 GK Jon Busch 18

Now World Cup squad:
1 GK Tim Howard
18 GK Brad Guzan
23 GK Marcus Hahnemann
2 DF Jonathan Spector
3 DF Carlos Bocanegra
5 DF Oguchi Onyewu
6 DF Steve Cherundolo
12 DF Jonathan Bornstein
15 DF Jay DeMerit
21 DF Clarence Goodson
4 MF Michael Bradley
7 MF DaMarcus Beasley
8 MF Clint Dempsey
10 MF Landon Donovan
11 MF Stuart Holden
13 MF Ricardo Clark
16 MF José Francisco Torres
19 MF Maurice Edu
22 MF Benny Feilhaber
9 FW Herculez Gomez
14 FW Edson Buddle
17 FW Jozy Altidore
20 FW Robbie Findley
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