To start, accept rivalry. Given, it is part of the game. Then, embrace the winning spirit.
Rivalry Netiquette Video Games
Rivalry with a competitor is an additional social element of a game or match. This element includes the right to promote victory within a class. The competition between players in an exclusive class. Thus, a social element attached to victory. And so, an exclusive class. Also, part of the entire class of players.
Video Games Rivalry
Rivalry is wanting to beat a specific competitor. It is what winning dynasties are built on. Winning is personal, but comments are about game play. Competition is good. Personal insults are bad.
It is proper netiquette to understand that rivalry is acceptable because it promotes improvement.