For Erie, Niagara is probably the top rivalry right now due to location and playing each other 6 times. The fanbase still really hates London and I would say they are kind of a secondary rivalry, but it's cooled a lot right now because of Erie's struggles. 2014-2017 Erie-London was definitely a much bigger rivalry with both teams being near the top of the league. I'd also say despite the location, Erie-SSM were probably decent rivals at one point since Erie knocked them out of the playoffs three years in a row.