The No. 8/10 Hornets (24-7-1) scored in every inning except the second and sixth in dispatching the Royals (16-17).
Leading 6-0 after scoring one in the first, three in the third and two in the fourth, SU found itself in a ballgame as EMU touched Shenandoah starter Darrell Thompson (5-1) for three runs on five hits in the sixth.
The rally came with two outs as 2-3-4 hitters Joe Hall, Justin Rodriguez and Kyle Armstrong strung together consecutive singles to cut the Royals deficit in half.
Thompson, who got out of it with a groundball to short, settled in to shut EMU down in the seventh before turning it over to Phillip Morse to start the eighth.
Morse worked a three-up, three-down eighth but was replaced after walking the first two hitters in the ninth.
Senior Matthew Wilson then recorded the final three outs with a lineout to left, a fly to right and a groundout to short.
Arens, Paul and Daniel Freshley all drove in two runs.
Freshley had what proved to be the game-winning run by drawing a bases loaded walk in the fourth.
Thompson allowed the three runs on 10 hits and one walk in 7.0 innings of work.