Atrnleast one Catholic school finalist in the CIF-Southern Section girls’ waterrnpolo tournament is assured, when Marymount of Westwood and Villanova Prep of Ojairnface off in the Division 7 semifinals Feb. 21.

Fourrnother Catholic high school teams also will play in the semis, including MaterrnDei (15-2). They play San Marcos in a Division 1 matchup Feb. 21 at UC Irvine’srnWoollett Aquatics Center. Other semifinalists include:

SantarnMargarita (D-2), which beat Arroyo Grande 19-7 in the quarterfinals, and playsrnNewport Harbor.

NotrernDame/Sherman Oaks (D-5), which beat Millikan 12-11, and plays Diamond Bar inrnthe semis.

Marymountrnand Villanova (D-7). The Sailors (15-5), who beat Mark Keppel 12-4, and thernWildcats (14-11), who stopped Pioneer 12-2, will play for the right to facerneither West Valley or Los Amigos in the Feb. 24 final.

Inrnother Catholic school quarterfinal action from Feb. 17, Rosary Academy lost tornMira Costa 8-4 (D-3), and Oaks Christian beat St. Lucy’s 14-5 (D-4).