LAND O'LAKES — Strength in numbers has served the Land O'Lakes High School swim program quite well, making the Gators as close to a dynasty as Pasco County has in any sport.But this season could see that approach — and the Gators' dominance — put to a pretty severe test. Land O'Lakes lost its two top female swimmers, neither of whom were seniors, along with the graduated Jordan Wheeler.It really hit head coach Robin Hilgenberg for the first time Monday, as she took a first concentrated glance at her team's roster."Wow. It's really going to be a lot of underclassmen," said Hilgenberg during the team's first tryout at Land O'Lakes Recreation Center.Sophomore Ashley Schrader will be leaned on heavily, and no fewer than five freshmen (Jessica Adcock, Margarita Czupryn, Romina McCloskey, Rowan Rees, Taylor Ward) will be in the mix. The Gators lost two state qualifiers, with Megan Thai heading to Sunlake and Pierce Imperialbobis moving back to Hawaii.The boys have a fine anchor in Jabari Ramsey, who was fifth in the state as a freshman (breaststroke). And the Gators, again, will end up with more sheer competitors than whomever they face."We may not have the top swimmer, but the thing is our depth. Our numbers will always be up and that's why we've been able to do so well," Hilgenberg said.It's simple math. At a dual meet, each team gets three swimmers per race, and the top five score (six points for a win, then 4-3-2-1). Even if the other school has the race winner, the Gators can still outpoint them and that is often the case. Mix in an event where the Gators take the top two or three spots and the rout is on."That's where Land O'Lakes is so good. Especially at the (Sunshine Athletic) Conference level where they take three of the top four or whatever," said Wiregrass Ranch girls coach Alisa Cimino. In fact, the Gator boys have won 14 straight SAC crowns, while the girls are at six straight.But in a glaring exception, and the most exciting result of the 2014 season, Cimino's girls edged the Gators — only the second dual-meet defeat in Hilgenberg's 13 seasons. The Sept. 16 rematch at LOL Rec should be spectacular, with Wiregrass returning state-qualifying sisters Maddy and Lauren Conway along with Daniela Laflamme.Sunlake, with the addition of Thai and the return of region champ (in both the butterfly and backstroke) Kara Wilkins, may also threaten the Gators in their Sept. 9 get-together."I think we actually have a pretty good shot at it," said Wilkins on Monday, just back from a one-week vacation that will be her last time away from the pool for a while. She's determined to record a top-three finish at state, after a disappointing eighth/ninth last year.Sunlake's girls were region champions last year while the boys were second. This year Sunlake joins Mitchell and the eight largest Pinellas schools in Class 3A, District 8. The Mustangs lost state champ Taylor Anderson and several other strong seniors. Kevin Smith led Mitchell's boys with two region titles as a junior.Wiregrass Ranch is up to Class 4A, the only Pasco school in its district alongside 11 Hillsborough County teams. Land O'Lakes stays in 2A along with the rest of the county schools, save Academy at the Lakes (Class A), which lost state champion Abbey Duncan when she moved to Ohio.Another state champ, Ridgewood's Emir Muratovic, graduated but the Rams have state qualifier (100 free) Rachel Bachand ready to go for her senior season.The swim season begins Aug. 26. Land O'Lakes will host River Ridge, which returns a strong group of underclassmen: Natalie Vasilakos, a region champ last year as a freshman, fellow sophomore Darya Molibag and junior Montana Gottman.