Elina Koskimies scored 13 points, Kaitlyn Lewis had 12 and Kaitlyn Marenyi added 11 for the Eagles (3-2).
Stanford shot 41.9 from the field to American’s 37 percent and won the rebounding battle, 40 to 25.
The Cardinal scored 21 second-chance points off of 15 offensive rebounds.
Stanford led 30-23 at halftime.
Stanford: The Cardinal were playing their second team coming off an NCAA Tournament appearance in as many days. Their opponent Friday, Florida Gulf Coast, reached the second round of last season’s tournament, while American was ousted in the first round.
American: One day after shooting 36 of 40 from the free-throw line in a 69-57 win over Hawaii, the Eagles were 12 of 15 on free throws Saturday. For the season, they are 93 of 110 from the line (84.5 percent).
American takes on Florida Gulf Coast on the final day of the four-team tournament Sunday.
Stanford will play Hawaii on Sunday, a team it has never lost to in nine previous meetings.
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