Bo Manor's Alex Cover led all scorers with four goals.
Joppatowne goalie Felicia Okoye finished with 13 saves.
Cobras beat Rams
Harford Tech stayed atop the Susquehanna Division Tuesday night with a 17-10 win over visiting Edgewood.
Gabby Spalt and Becca Williams scored six goals apiece to lead the Cobras (3-0 league, 5-1 overall), while Courtney Poole had three goals and Megan Campbell scored two.
Williams and Spalt also had five assists apiece and Poole had two.
Tech goalie Bryana Weston-Wyatt had seven saves.
No stats were available for Edgewood (3-1 league, 5-2 overall).
Elks top Eagles
Aberdeen dropped its Susquehanna contest at Elkton Tuesday, losing 11-6. Aberdeen was trailing at the half, 7-2.
Morgan Tildon led the Eagles (1-2 league, 2-5 overall) with three goals, while Montaiju Galmore, Natalie Muneses and Emma Boyson each scored one goal.
Aberdeen goalie Stacey Wardenfelt had six saves.