SAGINAW, Mich. — The Minnesota Monsters earned their second Arena Football One win over the Michigan Arsenal in as many tries, this time going to overtime for a 31-28 decision on Saturday at the Dow Events Center. The teams played a relatively low-scoring first half, going without points in the first quarter and going to halftime tied at 7-7, the Monsters scoring their first points of the game on a short run by quarterback Ja’Vonte Johnson A 27-…