Panthers star Matthew Tkachuk out for Stanley Cup Game 5

The Florida Panthers were without star forward Matthew Tkachuk for Game 5 of the Stanley Cup Final against the Vegas Golden Knights on Tuesday night in Las Vegas.

The Panthers are in a do-or-die situation Tuesday, down three games to one in the best-of-seven finals.

Tkachuk is dealing with an apparent upper-body injury and missed much of the third period of Game 4 on Saturday in Sunrise, Fla. Tkachuk also was sidelined