It's not often that an athletic program can legitimately be referred to as a dynasty.
The term fits for the boys volleyball teams at North Allegheny and Ambridge.
Both teams continued their dominance at the WPIAL finals Thursday night at Baldwin High School.
North Allegheny claimed its 10th WPIAL Class AAA title in 11 years and Ambridge captured its fifth Class AA title in six years.
North Allegheny, the top seed in Class AAA, won its seventh consecutive title with a hard-fought 3-2 victory against No. 3 seed Bethel Park.
"It was an awesome team effort," said North Allegheny's Tommy Keisling, who was recognized as the most valuable player in Class AAA before the match.
"There's no words to express how proud I am of my teammates. It's just unbelievable."
North Allegheny posted a 25-17 victory in the first game, but Bethel Park rallied to tie the match with a 25-21 victory in the second game.
North Allegheny completely dominated the third game, 25-9, but Bethel Park did not quit. The Black Hawks scored six of the final eight points to pull out a 25-21 victory and send the match to a fifth game.
North Allegheny capped its victory in style by jumping out to a 7-1 lead en route to a 15-8 victory.
"Keisling had one of the best nights I've ever seen," North Allegheny coach Dan Schall said of the senior who tied a career high with 26 kills.
"He had quite a few highlight-reel shots tonight."
Ambridge claimed its second consecutive Class AA title with a 3-0 sweep of Derry in a rematch of last year's title match.
"Discipline and commitment are the keys to our success," Ambridge coach Glenn Freed said. "That was evident in tonight's match.
"The kids have worked very hard with the goal of defending our WPIAL title."
After falling behind, 4-3, in the first game, Ambridge dominated the rest of the way by outscoring the Trojans, 22-13, to record a 25-17 victory.
Four Bridgers had three or more kills in the game, including Lee Smith with seven.
Derry held a 9-8 lead in the second game, but Ambridge rallied to score 13 of the next 16 points en route to a 25-18 win.
The third game followed the same format, as Ambridge pulled out a 25-19 win to conclude the sweep.
Smith recorded eight kills in the third game and finished the night with a match-high 21 kills. Brandon Buck added 9 nine kills and setter Aaron Mueller had 41 assists.
"It's amazing to win another WPIAL title," Smith said. "We've worked so hard with this as one of our goals. The ultimate goal is to win a PIAA title."
The top three finishers in each bracket qualify for the PIAA tournament.
Norwin and Our Lady of the Sacred Heart were the other two qualifiers, as each posted victories in consolation matches for third place.
Norwin earned its Class AAA berth with a come-from-behind 14-25, 25-20, 23-25, 25-21, 15-8 win against Penn-Trafford.
OLSH qualified in Class AA with a 26-24, 25-21, 27-25 sweep of Beaver County Christian.
All six teams begin PIAA play Wednesday.