The Dayton Dragons jumped out to a 4-1 lead after 7 innings and withstood a late Loon rally, holding on to win 5-4.
Great Lakes scored two runs in the bottom of the ninth, and had the tying run in scoring position with two outs but couldn't complete the comeback.
Bret Montgomery took the loss for the Loons.
Daniel Wolford pitched two innings of relief to earn the victory.
The Dragons will go for the series sweep Saturday evening, first pitch is scheduled for 6:05 p.m.
Saturday is Saginaw High Spirit Night at Dow Diamond.
For tickets call 989-837-BALL.