Kelly Lynch threw her second no-hitter of the season Wednesday in No. 6 Seton Keough's fourth game.
Lynch (4-0) gave up two walks and struck out eight as the host Gators (4-0) shut out Catholic, 10-0.
Lynch no-hit Archbishop Spalding, 10-0, on Friday.
No. 10 Hereford 8, Franklin 0: Left-hander LeAnne Collins (2-0) gave up one walk and struck out 15 in a no-hitter for the host Bulls (2-1) over the Indians.
Hereford's Caprice Roche' went 2-for-3 with a double and a triple.
Sparrows Point 4, Perry Hall 1: Freshman Emily Dutton hit a three-run homer in the third inning to lift the host Pointers (3-0) over the Gators.
Right-hander Brooke Peterson (3-0) gave up one run on five hits and two walks and struck out nine.
No. 7 Mount St. Joseph 3, Loyola 0: Peter Solomon pitched six shutout innings and Peter Crawford and Clark Clatchey hit solo home runs for the host Gaels (3-3).
Solomon gave up three hits while striking out seven. Ben Wilson pitched the scoreless seventh inning.
No. 4 Reservoir 10, Hammond 0: Left-hander Tony Gravow (1-0) gave up three walks, hit two batters and struck out five in a five-inning no-hitter for the host Gators (4-0). The Bears fell to 1-3.
Reservoir scored five runs in the first and again in the fourth.
No. 8 Chesapeake-AA 10, Southern 0: Right-hander Chase Delost (2-0) pitched a six-inning shutout, giving up six hits and one walk and striking out nine for the host Cougars (6-0). He went 3-for-3 with a double, a walk and an RBI.
No. 1 McDonogh 22, Garrison Forest 11: Megan Whittle scored eight goals to power the visiting Eagles (7-0, 4-0 Interscholastic Athletic Association of Maryland AConference) past the Grizzlies (1-5, 0-5) for their 98th straight win.
McDonogh asserted itself late in the first half and took a 16-8 lead at the break.
No. 7 Severn 9, No. 4 St. Paul's 8: Caroline Steele scored with two minutes left and the host Admirals (4-2) held on against the Gators (3-2).
Tuesday's boys tennis
Calvert Hall 3, McDonogh 2: The Cardinals defeated the Eagles for the first time since their Maryland Interscholastic Athletic Association championship season of 2001.
Vasko Nechev won the first match for Calvert Hall, 7-5, 6-0. Brian Machovec won the next match, 7-6 and 6-2, despite suffering a leg injury early in the second set.
In doubles, Cole Wernecke and Matt Flaherty clinched the match for the Cardinals after being down three match points in the third-set tiebreaker, which they won, 9-7.