SAGINAW — Saginaw Boswells volleyball team has a secret weapon in freshman Kailyn Gilbreath.The underclassman outside hitter took her opportunities seriously Tuesday night, recording nine kills and three blocks in a 25-19, 25-13, 25-15 sweep of Birdville at Newcom Gym.Yeah, its really not much of a secret now, Boswell coach Kevin Anderson said. Enough teams have seen her now and they know were going to give her some chances, so theyve made the adjustments.Still, Gilbreath was key in knocking down almost every chance at the net. The lefty did it mostly off of a backside set that frustrated the Hawks defense.The win, which came against one of the Pioneers tougher District 6-4A opponents, allowed Boswell (32-3, 13-0) to stay perfect in district play. The Pioneers can clinch the district title outright Friday against Fort Worth North Side.Despite Gilbreaths production, the Pioneers evened things out with their core offense swarming and a strong serve-receive game that forced Birdville (21-16, 8-4) into uncharacteristic errors.The wheels started coming off for the Hawks when an overruled play late in Game 1 kept them from drawing within a point of Boswell.Kyndall Browns back kill, initially ruled in, would have cut the Pioneers lead to 21-20.Instead, it was ruled an error and seemed to stifle Birdville the rest of the way. The Hawks had 24 errors for the match.Gilbreath said her accuracy this season is a product of having to grow up quickly at the varsity level.Last year, I was playing middle school volleyball, and up here, I have to do more than just blast the ball, she said. You have to look for spots to play here, and the game is moving a bit quicker.