Right after No. 7 South River came back to beat No. 4 Broadneck, 4-3, on Tuesday night in a home game in Edgewater, Seahawks Coach Megan Atkinson rubbed her stomach and had two things to say.

The first was, “I told you so.” The second was she hoped her due date was two days too early.

South River moved to 3-0 (1-0 in Anne Arundel County) and erased a 2-0 deficit by scoring three goals in 110 seconds during the second half.

Before the contest, Atkinson said games between the Anne Arundel rivals are typically one-goal affairs settled in the final five minutes. So Tuesday’s game matched her prediction.

As for the pregnancy, Atkinson said she will continue to coach until she gives birth to a girl. If she goes into labor, assistant coach Dana Russell and former head coach Katie Corcoran will coach the team. Atkinson is due Sept. 19, but she hopes the baby waits until after a meeting with No. 1 Severna Park on the 20th.

In Tuesday’s win, senior forward Emily Szachnowicz scored two goals and the first put the Seahawks on the board 8 minutes 15 seconds into the second period.

After a tying goal from sophomore midfielder Emily Thomas, who played only four games last season because of a broken collarbone, Szachnowicz pushed another score off the left post and into the net to give her team the lead with 10:26 left in the game. Sophomore Sarah King was attributed with another goal hit in a scrum 51 seconds later.

Since 2003, 16 matchups in the series have been decided by one score. Thanks to Broadneck junior Tess Barr’s hat trick, the latest edition in the storied series went down to the wire.

“From the first day of tryouts from freshman year, we’ve known about” the rivalry, Szachnowicz said. “They’re always one of our toughest competitors. They make us better players, so we love playing them.”

Broadneck ended South River’s 2013 season when the Bruins defeated the Seahawks in the Maryland 4A East region final after dropping two regular season meetings.

Barr gave Broadneck (1-2, 0-2) confidence early Tuesday by scoring twice in the first 10 minutes, but the Bruins broke down after Szachnowicz’s first score shifted momentum.

“I think that we broke down mentally when they scored their first goal,” Broadneck Coach Jen Plack said. “We got a little frantic. And when they got their second goal, they got a little more frantic.”

Barr tried to jump-start the Bruins by scoring her third goal with 7:11 left.

South River survived thanks to steady play from Elle Ulery, who finished with 14 saves.

Broadneck will have a chance to even the score on its home turf in Annapolis next Tuesday.

“We’re going to come back full intensity, and we’re going to fix our mistakes,” Barr said. “Hopefully the outcome will be different.”