Marengo came up with a run in the bottom of the eighth inning to defeat Belvidere, 6-5, in its season opener Saturday.
Mariah Dionne pitched all eight innings, striking out 10, walking two and allowing seven hits. She also had a double and an RBI.
Hannah Ritter was 3 for 4 with two RBIs for Marengo, while Leah Secor was 2 for 4 with two RBIs. Anna Walsweer was 2-4 with a home run and one RBI.