SWIMMING

* Irvine, Mission Viejo and Clovis at Heritage Aquatic Complex, Irvine, 3 p.m. today: The county’s top two boys and girls’ teams square off. And if top-ranked Irvine vs. No. 2 Mission Viejo isn’t enough, Clovis is one of Northern California’s better teams. The boys’ events will be the most competitive and relays could be the deciding factor. In the girls’ events, Irvine is at full strength after the Senior Nationals and Junior Championships. Mission Viejo will need its depth if it wants to make it respectable.