The Terps totaled 36 hits against the Spartans, their most in a three-game series since 2015.
The Spartans' seven-run fourth inning put the game out of reach.
The Terps escaped a bases-loaded jam in the seventh, but the Spartans broke through in the next frame.
The Terps opened a 10-0 lead in the fourth inning.
In one game over the weekend, the Terps completely emptied their bench.