Tension levels could hardly be higher ahead of the last round of action in Group B. All four teams go into their final game with a mathematical chance of reaching the China 2007 quarter-finals and, given the right set of results, all four could even end up with the same points total. Unsurprisingly then, the United States will be eager to end the suspense by securing a draw at the very least, but their opponents are sure to be in determined mood. Nigeria need to win by three clear goals to control their own destiny, and if they do win by a smaller margin they will be dependent on the result between Korea DPR and Sweden.

The game
Nigeria v USA, Shanghai, Tuesday 18 September, 20:00 (local time)

The stakes
While a draw would guarantee USA a ticket to the last eight, the Nigerians have no choice but to chase a three-goal victory. If they fail to win by that margin or more, it will be time to get out the calculators.

The players
With neither team handicapped by injuries or suspensions, both coaches boast a full squad.

The past
The Americans have triumphed every time the two sides have met, and usually in some style too. They overwhelmed Nigeria 7-1 at the FIFA Women's World Cup USA 1999, for example, as well as beating them 5-0 at USA 2003 and registering a 3-1 win at the 2000 Olympic Football Tournament.

The words
We're still on course to qualify. The USA are just another team we have to take on and if we can play at the level we know we're capable of, we can definitely win this game - Effiom Ntiero, Nigeria coach

We were back to our best against Sweden and Abby Wambach is in excellent form. Now we're fully concentrating on our last match and it will be important to keep ourselves on the same track and dictate the tempo - Kristine Lilly, USA midfielder