BLACKSBURG, Va. -- In a physical game against the top defense in the country, Santa Clara topped Boston University 2-1 to advance to the round of 16. The win puts the Broncos at 16-4-1 while Boston ends its season 15-4-4.

The Broncos return to the field at 1 p.m. Sunday versus the winner of Virginia Tech and West Virginia.

"I'm very proud of our team today," Santa Clara head coach Jerry Smith said. "We had to work very hard out there today against the No. 1 defense in the country. They made us work for everything we got out there today but it was good to get out to a good start with an early goal. I thought in the second half we were the better team and did a good job of getting that second goal."

Santa Clara outshot Boston 13-9 and 7-4 in shots on goal. Sofia Huerta and Morgan Marlborough had the goals while also each picking up an assist. Andi Tostanoski had three saves in net for the Broncos.

Santa Clara jumped out to the early lead in the second minute on the team-leading 15th goal from Huerta, Marlborough gathered the ball near the top of the box and passed to Huerta on the right side where she blasted a shot into the back of the net to make the score 1-0 Broncos.

Alyson Birgel hit the cross bar on a header off a corner kick and the Broncos got another corner off the clear. Sarah Jackson nearly scored off the ensuing corner but Boston was able to make the clear despite the ball being in front of the goal.

Huerta took a cross from Alyssa Kleiner with the 36th minute with no one in front of her but had to stop the ball with her body before taking the shot off a bounce and it went over the crossbar to keep the score 1-0.

The Terriers evened the score in the 42nd minute on a nice play in the box. Erica Kosienski passed to Kylie Strom who turned and put a shot to the right post and in to make the score 1-1.

Santa Clara outshot Boston 7-6 and 4-3 in shots on goal in the first half. The Broncos had four corner kicks to the Terriers' one. Tostanoski picked up two first-half saves.

The game went back and forth for the first 30 minutes of the second half with neither team having a great chance to score. That all changed when Santa Clara upped the pressure in the 76th minute. Huerta gathered the ball in the box and turned before hitting a shot that was saved. On the rebound Marlborough was able to collect the ball and hit it into the empty net to make the score 2-1 Broncos.

Santa Clara held off the advancing Terrier attack for the 2-1 and a trip to the Sweet 16.