TURLOCK, Calif. -- When Melanie Aguayo stepped onto the Cal State San Bernardino campus in the fall of 2012, coach Travis Clarke was the first to say that she had owned a scorer's mentality.

Scoring opportunities have been difficult for her in her two season seasons, but on Saturday afternoon she came through with arguably the biggest goal in the history of Coyotes soccer.

Aguayo found herself on the receiving end of a pass from freshman Paige Kang in the game's 97th minute and delivered it for the only goal as the Coyotes upset top-seed Cal State Stanislaus 1-0 in overtime in the NCAA West Regional semifinals.

The victory places the fourth-seeded Coyotes (12-6-4) into Friday's NCAA regional finals at second-seed Western Washington, which defeated sixth-seed Seattle Pacific 2-0 on Saturday.

The game will be played in Bellingham, Wash. at a to-be-determined time.

The Warriors entered play with an 18-0-2 record and fresh off winning the CCAA regular-season and postseason titles. Meanwhile, CSUSB was playing in just its third NCAA tournament game in school history.

But the Coyotes went toe-to-toe with the Warriors and hunkered down in a game that was scoreless through regulation.

CSUSB had just three shots with only one shot on goal -- from Jasmine Williams in the 30th minute from the circle that was saved by Warriors goalkeeper Chelsea Lewandowski.

In overtime, All-American Karenee Demery fired a shot on goal that Coyote keeper Chelsey Jones saved at 97:17.

Not even 30 seconds later, Kang fired a long pass from midfield that bounced past the Warriors defenders. Aguayo controlled the ball and tapped through the keeper's hands for the game winner.

The goal was Aguayo's first on the season and only her second in her career.

Jones had two saves and improved her single-season school shutout record to 13.