BOYS’ VOLLEYBALL

* Mater Dei at Dana Hills, 5:30 today: Mater Dei, ranked fourth in the county, was 12-0, 5-0 in the South Coast League, heading into this week. Senior David Van Sambeek and the Monarchs should get a stern test today from sixth-ranked Dana Hills in a match that could determine the league champion.

* Fountain Valley at Edison, 6:30 tonight: Every Sunset League match carries extra significance, considering that only one match separated the top five teams heading into this week. This neighborhood rivalry is always emotionally charged and features two of the county’s top outside hitters--Fountain Valley’s Brad Keenan and Edison’s Chris Van Reusen.

* Esperanza at Marina, 5 p.m. Tuesday: Seventh-ranked Marina has maintained a slim lead in this tight league throughout the season and could put away the title with a victory against Esperanza, the defending Southern Section Division I champs.