The Muskegon Clippers need to finish strong if they want to make the postseason for in the Great Lakes League for the first time.
Muskegon is now 15-16 on the season, good for fourth place in the Northern Division of the Great Lakes Collegiate Summer Baseball League.
The Clippers will look to even the series on Wednesday night against Galion with first pitch at 7:05 p.m.
The Graders led 3-0 after scoring one run in the second inning and two in the fourth.
Muskegon cut the deficit to 3-1 in the sixth inning, but the Graders responded with a tally in the eighth.
The Clippers closed out the scoring with a run in the ninth inning and had the tying run at the plate, but failed to score him.
Tre Morris paced Muskegon with two hits while Jimmy Allen and Cooper Peterson each knocked in a run.
Bryce Davis suffered the loss for the Clippers, allowing three runs on seven hits in 5 2/3 innings.