The Jacks now lead the best of five series 2-1, and can wrap up a spot in the Clark Cup finals with a win in Madison on Tuesday
Montague, Western Michigan Christian, Ludington and Ravenna also posted victories
Mona Shores, Reeths-Puffer, Spring Lake, Whitehall, Hart, Hudsonville and Kent City also collected wins
North Muskegon, Oakridge, Ravenna, Whitehall, Hudsonville and Ludington also recorded victories
The Rockets scored the only run of the game in the fourth inning when Alex Johnson crossed the plate on a wild pitch
Montague is now 10-6 on the season, while Kent City improves to 8-3 overall.
Sophia Hekkema led the way with four goals and an assist, while Emma Martin had a goal and two assists.
Reeths-Puffer, Mona Shores, Ludington and Newaygo each collected wins over the past few days