US national team coach Bob Bradley has heaped praise on Mexico midfielder Giovani dos Santos ahead of the World Cup qualifier on Wednesday.

Giovani terrorised the US defence in July's CONCACAF Gold Cup Final which Mexico won 5-0 and Bradley knows just how good the 20-year old can be.

"Giovani had a very good Gold Cup, when you look back at our game in the final, certainly over the first 50 or 55 minutes as a team, I think we defended pretty well," Bradley said.

"After we fell behind, we allowed the game to become very wide open, and that's when good players can take advantage.

"He has very good ability; he likes to tilt often times to the right side, he's very good at coming in on his favorite left foot, we've played against him before and we know the kind of talent that he possesses."

Bradley added that the team faced a further challenge as the stadium they are due to play in (Azteca Stadium in Mexico City) is at high altitude and explained why the team was arriving just a day before the match.

"We have worked for a long time with different people, different experts, on altitude training, including many from the U.S. Olympic Committee," he added.

"The research we have stuck with is one that says if you don't have enough time to acclimatize, which can take 10 days or so, then going in late is your best bet.

"So that is the way we've scheduled things, knowing that in a single fixture date, players have only arrived on the last day."