BREAKING: Game gets HEATED after Mangiapane breaks 'Unwritten Hockey Rule'

Tonight the Calgary Flames are in Canada's Capital to take on the Ottawa Senators, and things quickly got nasty during the game when one of hockey's unwritten rules.

The Flames were taking the puck into the zone, which ended up being ruled as offside, but after the whistle, Flames Andrew Mangiapane still let's go a one-timer into an open net.

This did not sit well with the Senators who immediately went after Mangiapane:

Mangiapane shoots the puck after the whistle and Thomas Chabot isn't having it.

Causes a little scuffle between the #Flames and #Sens lines.

offsetting minor penalties occur. #GoSensGo pic.twitter.com/Y9QDu1Tfle� Pesky Sickos (@PeskySickos) February 14, 2023

27-year-old Russian defenseman tragically passes away

The goalies drop the mitts during a heated brawl in an OHL game

Chicago Blackhawks place a player on waivers and release more from their PTO

A whopping 59 players placed on waivers by over 20 teams around the NHL

Columbus Blue Jackets to miss captain Boone Jenner for a significant stretch of the season

New York Islanders waive forward in just year two of a seven-year contract

Vancouver Canucks and Colorado Avalanche make a surprising trade on the eve of the regular season

2019 first round pick Jakob Pelletier placed on waivers: Montreal Canadiens may claim him

Connor Bedard given massive new role with the Chicago Blackhawks

NHL's most hated player comes out second best while going after Montreal's Arber Xhekaj