The Big Lake Hornets held Zimmerman to a season-low in points as they defeated the Thunder 60-45 on Tuesday evening in Big Lake.
Adam Braegelman hit 14 points, Austin 13, Sam Dokkenbakken 11 and Justin Benker 10 for the Hornets (7-9).
Zimmerman (11-4) was averaging 72.4 with a previous low of 52, but trailed 33-18 at halftime. Kyle Connelly sank 10 points, and Caleb Lunning and Jake Wilson 8 each.
Zummerman will host Foley on Thursday.