Barbzette assisted on the third goal, which was booted in by Zac Koontz in the closing minutes.
"We played really well," Clark said. "We were communicating, we were doing the small things right that we've been talking about all season. I'm just really happy and it's well deserved for the guys."
Ballangee ended up with 11 saves but scoring chances were tough to come by for Riverside, and when an opportunity did arise the Warriors (3-10-1) seemed to fall just short. Capital keeper Kevin Jones needed just three saves to complete the shutout.
"We've got a young team and I think the boys have done as good as they can do this season and I'm proud of them whether they win or lose," Riverside coach Amy Miller said. "My keeper is fantastic, [forward Cameron Norris] is an excellent player as well and I'm proud of them."
The Cougars (7-8-1) now have an opportunity to avenge a 3-0 defeat at the hands of No. 1 George Washington on Oct. 3 and will fly into Thursday's game with momentum, nothing to lose, and a chance to make waves around the state.
"Hopefully we can turn the tide on [the GW loss]," Clark said. "It's the small things that we've talked about. Just making sure we have faith in each other, playing as a team, believing in each other, and doing the small things so the big things are possible."
Reach Ryan Pritt at 304-348-7948, ryan.pr...@wvgazette.com or follow him at twitter.com/RPritt.