Rachel Hahn held on to the ball tightly Tuesday night. The Glendale goalkeeper made sure she held on after stopping what would have been the tying shot. They will face second-seed Arroyo Grande on Friday at a time and site to be determined. Before Tuesday, Glendale had never reached the quarterfinals. But Nitros coach Bobby Zirovich has seen his team’s momentum grow after upsetting La Salle of Pasadena – the No.7 team – last week, then stunning the No. 3 Spartans (21-8). “Our girls don’t have a lot of varsity experience but they know how to finish things,” said Zirovich, who received the winning goal from Lily Broussard with 1:08 remaining. “They just have the strength to continue to play until the end.” Broussard, Shaggy Abolian and Vanuhi Ovasapyan led the Nitros’ scoring with three goals apiece, behind the quick passing of Hahn. Casey Sripramong added a goal for Glendale. Began led Rio Mesa with four goals. Rachel Rillo added three and Bianca DiMarcello . DIVISION II (16-13) had two Agoura 15, Mission Viejo 5: The Chargers (24-6) advanced to Friday’s semifinals and will take on Santa Barbara at the William Woollett Jr. Aquatics Center in Irvine. Emily Schmachtenberger led Agoura with five goals. Carly Clark scored four and Casey Flacks added two goals, five assists and eight steals. Goalkeeper Sara Gralitzer had 17 saves. DIVISION IV Harvard-Westlake 12, Malibu 11: Nadia Dan scored seven goals to help the Wolverines (14-6) advance to the semifinals, to be played Friday at a time and site to be determined. Searra Silverberg scored six goals and Sophia Sarlow added four for the Sharks (22-6). 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! Hahn’s 10th save helped the Nitros hold on to a 10-9 Southern Section Div. IV girls’ water polo quarterfinal win over Rio Mesa of Oxnard at Burbank High. Hahn stopped Alicia Began’s shot with four seconds remaining, sending the Nitros to the semifinals for the first time in school history.