WASHINGTON (AP) _ Abby Wambach, bolstering her bid for a spot on the World Cup team, scored her sixth goal in six games, and Mia Hamm had a goal and an assist as the Washington Freedom beat the San Diego Spirit 2-0 on Saturday.

Wambach scored on a breakaway in the 40th minute off an assist from Hamm. It was Wambach's 11th goal of the season and Hamm's 11th assist.

Hamm scored with a thrilling 20-yard free kick that went past the wall and just inside the right post in second-half injury time. It was her eighth goal of the season.

The teams entered tied for third in the eight-team league. The victory vaulted the Freedom (8-6-4) ahead of second-place Boston, which plays Sunday at San Jose. The top four teams make the playoffs.

The Spirit (6-6-7) played without top scorer Julie Fleeting, recovering from a concussion suffered Thursday against Boston. The team's other major scoring threat, Shannon MacMillan, is out for the season with a knee injury.

Wambach's scoring streak comes as she has moved from outside shot to serious contender for the U.S. national team for the World Cup in September. She was a constant scoring threat throughout against the Spirit, and gave her team a penalty kick when she was taken down near the goal in the second half.

Freedom captain Jen Grubb took the kick, but it was saved by Jaime Pagliarulo.

Freedom goalkeeper Siri Mullinix made four saves for her fourth shutout.