Craig Boa wasn't expecting to set foot inside the Edmonton NHL bubble — let alone set up shop.

Denis Gurianov scored four times and added an assist as the Stars scored seven unanswered goals to beat the Flames 7-3 at Rogers Place and advance to meet the Colorado Avalanche in the next round.

The Dallas Stars raked in a 5-4 win over the Calgary Flames on Sunday to even their best-of seven NHL playoff series at two games apiece.

The teams were playing the second game in two nights.

Corey Crawford made 43 saves to steal the game for Chicago.

"We've faced adversity all year. If there's a group that can do it, it's this group."

As NHL players battle on the ice, the mental battle of living in a "bubble" will be critical to their success, according to a performance psychologist.

It's a rare opportunity for a husband and wife as they work inside Edmonton's NHL bubble.

"The fear of losing becomes the trump of anything. If you don't block shots you're not going to win, so it's a fear of losing."