2. U.S. attacking options are impressive.
To give an idea of the tools Jill Ellis has at her disposal, she left Carli Lloyd and Christen Press -- 102 and 45 career goals between them -- and Mallory Pugh -- billed perhaps unfairly as the next Mia Hamm -- on the bench for the start of the game.
The front three of Alex Morgan, Tobin Heath and Rapinoe combined for five goals and frankly could have had more if they had put away their chances, particularly in the first half. Once left back Crystal Dunn -- a converted forward -- got into the attack in the second half, the goals came easily.
3. Mexico remains an enigma.
Was the USA that good or Mexico that bad? It was a little bit of both.
Mexico was supposed to be the only Group A opponent that could give the USA a game, but it wilted under intense U.S. pressure. Its midfield was nonexistent, and the backline in front of former U.S. U-20 World Cup keeper Bianca Henninger was repeatedly beaten on second balls.
All is not lost for Mexico. It should still beat Trinidad & Tobago and Panama to advance to the final four, where it should at least finish third. Concacaf qualifying is very forgiving, so even a loss in the third-place game would throw Mexico into a playoff, where it would be favored against a weak Argentina team.
TRIVIA. The USA is 28-1-0 all-time in Concacaf Women's World Cup qualifying with a 164-5 goal difference. Its only loss: 2-1 to Mexico in 2010.
Oct. 4 in Cary, North Carolina
USA 6 Mexico 0. Goals: Rapinoe 3, 70, Ertz 47, Morgan 57, 80, Heath 61.
USA -- Naeher; O’Hara (Sonnett, 67), Dahlkemper, Sauerbrunn, Dunn; Ertz, Lavelle (Lloyd, 66), Horan; Heath (Pugh 77), Morgan, Rapinoe.
Mexico -- Henninger; K.Robles, Bernal, Romero (Murillo, 78), Ferral; Sierra, Rangel, Antonio (Johnson 61), Mayor, Sanchez (Palacios, 47), Corral.
USA / MEX
Shots: 23 / 3
Shots on Goal: 10 / 1
Saves: 1 / 4
Corner Kicks: 7 / 3
Fouls: 8 / 14
Offside: 6 / 3