McMaster suffered its first loss of the OUA football season after getting slammed 30-8 in Ottawa Saturday afternoon.
The Gee-Gees’ forced three turnovers and held Mac quarterback Asher Hastings to just 249 yards passing while intercepting him once.
Ottawa QB Derek Wendel torched the Marauders defence for 441 yards and three touchdowns as the Gee-Gees improved to 2-and-0.
Wendel was picked of three times as well but also rushed for a game high 67 yards.
The 5th ranked Marauders could only manage two field goals and a safety, and fell to 2-and-1, their first loss under rookie head coach Greg Knox.
Mac visits 0-and-3 Waterloo on Saturday.