Fighting is a part of the sport of hockey, also has been, probably always will be, but it's not very often you see a pair of superstars drop the gloves, in fact, it's heavily discouraged most of the time. Sometimes though, emotions take over and star players end up dropping the gloves.
Eventually, Seider would get the upper hand and the refs would step in, but if that fight proved anything, it's that even stars can go at it and not flinch