The Dragons, who have won 16 straight games and were the City League champions, will open up the state tournament against the WPIAL's third-place finisher, Canon-McMillan, on Friday.
"It meant a lot to the program," Guillard said. "It was great to witness the girls play with confidence and their handywork that they put forth all season paid off."
Bailey White led Allderdice with 23 points, while Peyton Lynch added 16. Seena Teshome also scored 10 points for Allderdice. The Dragons lost by 17 points in the subregional game last year. To try and halt Allderdice's struggles on the road, Guillard scheduled a game with Erie McDowell in early January.
The Dragons won that game in overtime. Allderdice didn't need overtime this time around. The Dragons built a 16-8 lead by the end of the first quarter against the Royals.
"We played really good defense and really played as a team on the road to secure a win," Guillard said. "Thankfully, we had the experience of playing Erie McDowell earlier this season. It prepped us for the long ride, the atmosphere and the refs."
Josh Rizzo is the editor and publisher of Pittsburgh Preps and Colleges. Story ideas can be submitted to [email protected] or on X @J_oshrizzo.