When the Florida Panthers and Ottawa Senators meet up, one never knows what havoc may occur. Their history together over the last few seasons has been, well, less than friendly.

It appears that the feeling was mutual between Matthew Tkachuk and Brandon Hagel ... Hagel and Matthew’s brother and team USA teammate, Brady, shared their reactions to the opening fights.

Team USA's Brady and Matthew Tkachuk fought fiercely against Team Canada during the 4 Nations Face-Off, involving in multiple altercations. Despite the intense clashes, Team USA emerged victorious ...

SUNRISE, Fla. — Brady Tkachuk scored for Ottawa. Matthew Tkachuk scored for Florida. Before the brothers become teammates, the sibling rivalry was on display once again Saturday night.

Taryn Tkachuk celebrates Matthew and Brady Tkachuk’ big game in team USA’s win over Finland (via Instagram/@taryntkachuk) The Tkachuk brothers led the U.S. to a 6-1 win over Finland in the 4 ...

Matthew Tkachuk, Brady Tkachuk and J.T. Miller used a group chat to plan instigating three separate fights in first nine seconds of Team USA's game against Canada on Saturday night. Brady Tkachuk ...

SUNRISE, Fla. (AP) — Brady Tkachuk scored for Ottawa. Matthew Tkachuk scored for Florida. Before the brothers become teammates, the sibling rivalry was on display Saturday night. For the third ...