EDMONTON, Alberta -- The USA Baseball Women's National Team (3-1) scored seven times in the seventh to force extra innings, but couldn't complete the comeback as it fell 15-9 to Canada in eight innings.

Canada appeared to be in firm control of the contest as it built an 8-1 lead through six-and-a-half innings. But the wheels came off for the Canadians in the bottom of the seventh inning as the U.S. put together a furious two-out rally, scoring seven unearned runs to tie the game at eight.

In the bottom of the seventh, the U.S. had a runner on first and two outs when Stacy Piagno stepped to the plate. She started a string of eight straight batters to reach, bouncing a base hit up the middle. Michelle Snyder followed, ripping an RBI double to left field to make it an 8-2 contest.

Four straight walks and a passed ball had Team USA in striking distance, trailing just 8-6. With the tying runs in scoring position, Donna Williams lined a single to center, completing the comeback and tying the game at eight.

With the international tie-breaking rules in play in the eighth, Canada took advantage of the two free base runners to quickly regain the lead. A walk and four wild pitches proved costly for the U.S. as Canada opened up an 11-8 lead. Four consecutive walks pushed the lead to four and a bases-loaded double from Autumn Mills put Canada in front 15-8.

The U.S. managed just one run in the bottom of the eighth as Samantha Cobb scored on a fielder's choice off the bat of Malaika Underwood.

Canada jumped on top in the first inning, scoring a pair of unearned runs with two outs. A Katherine Psota double gave Canada a 1-0 lead. Meagan Cornellson followed with a base hit for a 2-0 lead.

A manufactured run in the third for Canada extended the lead to three. Stephanie Savoie led off the frame with a base hit and was standing on third with one out. Jennifer Gilroy hit a ground ball to second to drive in the run.

The deficit grew to five as Canada scored twice on three hits in the top of the sixth. Jenna Flannigan and Nicole Luchanski provided the RBI base hits for Canada.

Team USA finally pushed across a run in the bottom of the sixth to cut the lead to four, 5-1. With one out and Snyder standing on first, Tamara Holmes lined a double off the wall in left center to drive in the first U.S. run of the game.

Three more Canadian runs crossed the plate in the top of the seventh to make it an 8-1 contest, setting up the crazy final inning and a half.

Ashley Sujkowski (0-1) was tagged with the loss after giving up three runs (one earned) in the top of the eighth inning. Marti Sementelli started for the U.S., surrendering three runs (one earned) in four innings of work.

Team USA falls to 3-1 in pool play. It will return to the diamond Tuesday afternoon at 4 p.m. (ET) to take on a winless Cuba squad. The contest will be played at John Fry Park in Edmonton, Alberta.