While not exactly rivals Bloodweiser would have liked if the following teams [in no particular order] had been in CPL East this season so we could have given them a savage beating;
Thunder Bay Wolverines - in the same league and always a threat on the way up through the divisions till they took the easy option and went for lolWest in CPL, the cowards!
Moose Jaw Grizzlies - couple of good games in the early days before they disintegrated
Red River Wolverines - 2 poxy poxy wins over us that cost us AA gif in Season 11, and AAA playoffs in Season 12...fuckers.
Hudson Bay Horrors - always enjoyed GMC's banter which meant we wanted to beat them!
October Wildfire - Only ever played two games vs these guys [and in a 10 day stretch] but both times I thought the winner was going to WL which meant they were both intense games which are easy to remember.
Oh wait... my bad, we've already given HBH a spanking this season....
From over in the East looking over our inferior brothers in lolWest in the last 5-6 seasons we always thought of MJR, Sas and NBD as 3 teams that were good rivals with each other though.
[In some kind of weird hormone-driven teenage girly threesome of rivalry and pillowfights type way tho - feel free to send pics redrayder

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