Sam Reinhart scored on a power play and added a short-handed goal that gave the Florida Panthers the lead for good in the second period and the defending Stanley Cup champions beat the Boston Bruins 4-3.

Even without Matthew Tkachuk and Aleksander Barkov, the Florida Panthers remain in the heads of the Boston Bruins.

The Bruins were undisciplined with their emotions and with the puck, and they lost way too many battles in a 4-3 loss to the Panthers, who now have a 2-0-0 edge in the season series. The worst part for the Bruins was that the Panthers didn't even have their two-best players in center Aleksander Barkov (injury) and left wing Matthew Tkachuk (illness).