Ani Mason scored the game-winner six minutes into the second overtime as No. 1 Severna Park (3-0) downed No. 13 Chesapeake-AA, 1-0.
Courtney Miller had 10 saves for Chesapeake (0-3).
* Fallston 4, Hammond 0: Katie Simon scored two goals to help No. 2 Fallston (2-0) past visiting Hammond.
* Westminster 2, Centennial 0: Megan McGee and Jen Medura each scored first-half goals as No. 4 Westminster (3-0) defeated host and No. 7 Centennial.
* Bryn Mawr 4, John Carroll 1: Kate Cole and Emily Hickman each scored twice to pace visiting and No. 5 Bryn Mawr past John Carroll (0-1). Kate Sullivan scored John Carroll's goal. Bryn Mawr outshot John Carroll, 18-1.
* North Carroll 1, Francis Scott Key 0 (2 OT): Megan Rittler scored 1:37 into the second overtime as No. 9 North Carroll (2-0) edged No. 15 and visiting Francis Scott Key. Becky Bosley made six saves for the Panthers.
* Severn 3, Lutheran 0: Jessica Burke, Amy Galbach and Bess Freedlander each scored goals to lead No. 10 Severn (2-1) over visiting Lutheran.
* St. Mary's 2, Broadneck 1: Rebecca Kuehn scored the game-winner at the 15-minute mark of the second half to lift No. 14 St. Mary's (4-0-1) over host Broadneck (0-2). Sara Tengwell opened the scoring at the 12-minute mark before Broadneck's Melissa Bragg tied the game eight minutes later.