Stevenson has hosted 26 state water polo tournaments — 13 boys and 13 girls — without winning a championship.
The Patriots have two chances to change that Saturday.
The girls picked up Friday where the boys left off Thursday, blowing out New Trier 13-2 in a quarterfinal in Lincolnshire.
The Patriots will take on defending champion St. Ignatius in a girls semifinal at 11:30 a.m. Saturday, right after the boys take on Loyola at 10:15.
"We both have a great chance to win a state championship, which Stevenson hasn't done yet," said Stevenson sophomore Allison Travetto, who scored five goals Friday in her first state tournament game.
"It is really exciting for both of us to have that exciting opportunity."
Ten-time state champion Fenwick (30-4) and Naperville North (33-1) will square off in the first boys semifinal at 9 a.m.
Fenwick will face Mother McAuley in the other girls semi at 12:45.
The boys final is scheduled for 6:30 p.m. Saturday, followed by the girls at 8.
Friars keep rolling: Fenwick is usually the school with two teams in the semifinals, a feat the Friars will accomplish Saturday for the eighth time thanks to the girls' 11-8 victory over Naperville North in Friday's quarterfinals.
Fenwick's boys have won 10 titles, the girls seven.
They are a combined 57-3 in state tournament games following their respective quarterfinal victories, including a 31-0 mark by the boys, who lost in the sectional final the two years they did not win it all.
Loving the losses: Four losses to Fenwick this season could have robbed the defending champion of some of its swagger.
Defending champion St. Ignatius (23-5) looked plenty good Friday, happily remaining under the radar despite its 15-4 victory over Lincoln-Way East in a quarterfinal.
"I love our position here because, yeah, we're the defending champs but the pressure is off us because we're not the undefeated team here," Ignatius coach Michael Cashman said. "I love our losses to Fenwick right now because we're still able to grow."
St. Ignatius returned most of the lineup responsible for its first title last season after two second-place finishes and three thirds.
Tammy Stelnicki is the Wolfpack's leading scorer with 76 goals. Diana Fernandez scored four goals and Beca Martinez had three against Lincoln-Way East.