Menlo Park resident KK Clark scored seven goals and the U.S. Women's Water Polo Team completed group play undefeated, beating Argentina, 30-3, on Saturday at the Pan American Games in Toronto.
Incoming Stanford freshman Makenzie Fischer added five goals and Courtney Mathewson scored four.
Team USA advances to the semifinal round Sunday against Brazil.
The United States scored the first nine goals of the contest, including three straight from Kaleigh Gilchrist and one each by Courtney Mathewson and Stanford senior Maggie Steffens.
Cardinal grads Kiley Neushul and Ashley Grossman and Fischer also scored in the first.
Clark finished off the game scoring three of the final five goals to push Team USA to a 30-3 victory.
Team USA went 6 of 7 on power plays and 2 of 2 on penalty shots. Argentina went 2 of 5 on power plays and did not attempt a penalty.
The U.S. finished group play undefeated after downing Argentina, 14-3, Saturday.
Stanford grad Tony Azevedo led the offense with five goals while Merrill Moses and McQuin Baron split time in net, combining for eight saves.
The win sends Team USA into the semifinals with a match against Canada on Monday.
With Brazil already in the other semifinal and qualified for next summer's Olympic Games, the United States match with Canada could very well determine the Olympic qualifier from the Pan American Games for the 2016 Olympic Games.
Azevedo and Stanford senior Bret Bonanni each scored power-play goals to snap a 1-1 tie.
The second period belonged entirely to Team USA. While keeping Argentina scoreless, the United States was able to rattle off three more goals, one from Bonanni and two from Azevedo, all on the power play.
The first from Azevedo saw the captain casually backstroke with the ball down to two meters, turn, and quickly fire a goal over the head of the Argentinean keeper.
The United States went 7 of 11 on power plays and 2 of 2 on penalty shots while Argentina went 2 of 4 on power plays and did not attempt a penalty shot.