That was for the Germany match and during the Group stages. O'Brien played out right against Mexico.
I could have sworn he played out left for that game.
Now you got me wondering.
USA vs Mexico: Friedel, Berhalter, Sanneh, Pope, Mastroeni, O'Brien, Lewis, Reyna, Wolff, McBride, Donovan. Subs: Agoos, Beasley, Cherundolo, Jones, Keller, Llamosa, Mathis, Meola, Moore, Regis, Stewart.
You sure we didn't play straight 4-4-2 with O'Brien left-back? I know he was deployed there before. Sanneh was out right, I know that. Whether he was RCB or RW in the 3-5-2 I don't recall.