Eastern Tech (22-2) will play Linganore of Frederick County on Tuesday at Bachman Sports Complex in Glen Burnie.
The Mavericks broke a 2-2 in the fourth when freshman shortstop Jenn January laced a single to right field, which scored Giselle Alvarez and Ashley Sauerwein.
No. 9 Chesapeake-AA 4, No. 8 Broadneck 2: The host Cougars defeated the Bruins in the 4A East regional championship. Broadneck led 1-0 until Chesapeake scored twice in the fourth on a two-RBI single by Deja Sutton. In the fifth, Chesapeake scored two runs again and held on for the winning margin.
Lansdowne 5, Loch Raven 1: Maude McCourry pitched in her fourth regional title game and delivered. McCourry gave up one run on three hits for the host Vikings in a Class 2A North regional championship. She also had an extra-base hit, a double.
No. 4 North Harford 7, Towson 1: The Hawks (22-2) won their second regional title in as many years behind the three-hit pitching of Ryan Stinar in the Class 3A North regional championship game.
Stinar had 10 strikeouts to earn his sixth win. Cody Brittan went 2-for-3 with an RBI. North Harford travels to Joe Cannon Stadium on Tuesday for the state semifinals.
No. 8 Patterson Mill 5, North Caroline 4: JT Tipton went 2-4 and scored twice as the Huskies (17-4) beat the Bulldogs in the 2A East regional final Friday. Matt Golczewski pitched a complete game, giving up four hits and had six strikeouts. He also went 2 for 4 at the plate and had a game-tying RBI in the fifth inning. Aaron Childs' sacrifice fly in the bottom of the sixth proved to be the game-winning margin.