Complex sentence: The Monarchs went 25-5 overall and 9-1 in the Angelus league, their only league loss to Servite of Anaheim.
Split into simpler sentences: The Monarchs went 25-5 overall, and 9-1 in the Angelus league. Although Mater Dei won the Angelus league, the team lost one league game to Servite of Anaheim.