Deletion of Panthers–Seahawks rivalry

Comment: Needs ''much'' better sourcing about being a rivalry.  I count 3 sentences within all of the citations which are weakly on point. 1) http://www.usatoday.com/story/sports/nfl/panthers/2016/01/13/seahawks-carolina-seattle-playoffs-rivalry/78759360/ "The Carolina Panthers and Seattle Seahawks have such familiarity with each other that Panthers coach Ron Rivera says it’s ''almost'' as if they're ''division rivals.''" 2) http://www.charlotteobserver.com/sports/nfl/carolina-panthers/article54359770.html "The Observer looks at the recent games in one of the NFL’s more interesting – and improbable – rivalries:" and 3) http://www.thestate.com/sports/nfl/article54065065.html "Carolina and Seattle (11-6) have struck up ''quite a rivalry in recent years,'' with the Seahawks knocking the Panthers out of the playoffs last season."  ("Sports rivalries are not inherently notable") refers us to  and a requirement of '''significant coverage
Stance: comment
Cited policy: Wikipedia:Notability (WP:NRIVALRY||WP:GNG)