Freshman Lexus Lambert scored the only goal of the match with 10 minutes remaining in the second half as the Seneca Valley girls soccer team punched its ticket to the WPIAL Class AAA final with a 1-0 win over Bethel Park at Chartiers Valley High School Wednesday night.

The Raiders (20-1) were dominant again on defense, allowing just two shots on goal the entire night.

“They have played well all year long,” said Seneca Valley girls soccer coach Dave Sylvester.

Seneca Valley, which has now won 20 consecutive matches, will face Peters Township (19-1) in the WPIAL championship match Saturday at a site and time to be determined.

“We have a history with them,” said Sylvester, whose team beat Peters Township for the WPIAL title in 2009. “We've fared pretty well against them. They are the No. 1 seed and no WPIAL team has beaten them. We're going to go in as underdogs and throw the kitchen sink at them.”

Slippery Rock 3, Harbor Creek 2 (double OT) — Freshman Marissa Siebka scored the tying goal with three minutes remaining in regulation on a free kick and then put in the game-winner midway through the second overtime to give the Rockets a stunning win in the first round of the District 10 Class AA playoffs at General McLane High School.

“Big time,” said Slippery Rock coach Les Smith when talking about the upset. “We were talking earlier in the season about how we probably shouldn't even be here. Now, we're moving on.”

Siebka started the season as the Slippery Rock sweeper before moving up to the midfield and forward.

“That move has certainly paid off,” Smith said.

Slippery Rock (12-6-1) hasn't lost in seven straight matches since a defeat to Grove City, which lost 6-0 to Mercyhurst Prep Wednesday in its first-round playoff contest.

The Rockets will face Villa Maria at 5 p.m. today at Harbor Creek in the district semifinal round.

It was another dominant performance from the Mars volleyball team in the WPIAL quarrterfinals.Abby Matusik had 11 kills and four aces and Emily King and Jaden Zimmer each had nine kills as the Planets rolled to a 25-12, 25-19, 25-9 victory.Katie King added 33 assists and Kelsey Bruce had nine blocks for the Planets.Mars (15-3) will face Ambridge, a 3-2 winner over Freeport, today at a site and time to be determined in the semifinals.A-C Valley 3, Curwensville 0 — Meredith Snyder had 11 service points, six aces and eight kills as the Falcons earned a 25-9, 25-13, 25-17 sweep in the opening round of the District 9 Class A playoffs.Kelsey Boocks added 12 points, eight aces and five kills for A-C Valley (14-1), which will host Kane at 6:30 p.m. today in the second round of the playoffs.Slippery Rock 3, General McLane 1 — The Rockets won 25-20, 19-25, 25-20, 25-18 to advance in the District 10 Class AA quarterfinals.The Rockets will play Fort LeBoeuf today at a site and time to determined in the semifinal round.No other information was available.Fort LeBoeuf 3, Grove City 0 — The Eagles were swept 25-16, 25-11, 25-17 in their District 10 Class AA quarterfinal match.No other information was available.