I feel a rival of Nevada Battleborn would be the Vancouver Whalers. The Whalers' GM traded up to 2oa during the Junior Draft specifically to grab Gwendolyn Telenn, only for Nevada Battleborn to trade in the last moment to take her. Either way, Nevada has held the upper hand so far, having won in both games, even if the first was a 5/4 point game. As a team that's won roughly half their games and has roughly equivalent stats to Nevada, Nevada's simply edged out ahead of Vancouver in spite of the near equal footing. Despite Gwendolyn settling into the Battleborn team, Vancouver has continued to call for her personally to try moving to the Whalers instead (I have a tamper clause and it's light hearted, it's fine.) This brief rivalry will likely fade out over time as it was a personal rivalry near Gwendolyn, but it's a silent one nonetheless as Nevada fights off the Whalers for the season.