At Presque Isle, Ben Walls limited the Wildcats to four hits as he outdueled Ryley Norton in the first game of a doubleheader.
Walls surrendered two singles to Norton and one each to Saul Nunez and Wilder York while going the distance.
Mount Desert Island scored the game’s only run in the seventh. Caleb MacDonald and Walls knocked back-to-back singles, Adam Gray walked and Colin Mooers delivered a sacrifice fly to right field.
Cam Crawford doubled in the third inning for the Trojans.