That of course did end up happening in the latter part of the third period, but camera footage caught Reaves issuing a challenge to Rempe off the draw and the challenge being accepted moments before the gloves were down and the two faced off at centre ice.
This fight was building all game, both players knew it had to happen at some point and when things like this happen, the challenge is rarely issued by the rookie. The veteran player almost always asks first as a sign of respect.