The Wallaceburg Red Devils could not take advantage of their home floor on Saturday, as they lost to Windsor 13-11.
With the win, the series is now tied at two games apiece.
The fifth and deciding game in the series will be Tuesday in Windsor.
The Devils were led by Mike Myers, who had five points including the games opening goal.
Wallaceburg was playing without their captain Joel Shepley, who signed with Six Nations of the Junior A loop on July 1.
