from Eric Francis of Sportsnet,

Even Leafs fans could feel the Calgary Flames’ latest loss, as it included an early departure from Chris Tanev.

Yes, the same Tanev brother the Leafs hope to acquire if the Flames opt to swap out its UFAs after Christmas.

Obviously he’d have to be healthy if a deal is to be made.

At this point that’s very much in question, as the 33-year-old defenceman left Monday’s 6-5 loss in Colorado after a mere 15 seconds, following a Ross Colton hit that sent Tanev face-first into the glass.

He got to his feet by himself and appeared dazed as he skated slowly to the bench, hunched over and in obvious discomfort as trainers walked him immediately down the tunnel to the dressing room....

Aside from Tanev’s injury, the only thing that stung more for the Flames than their 30 shot blocks was leaving Denver without a point.

It was, quite simply, Calgary's grittiest effort of the season.

Playing in one of the toughest NHL buildings against a juggernaut to kick off three hellish road tests in four nights, the Flames entered the third period with a two-goal lead that appeared to have them destined for a season-turning upset.

Instead, it ended with a stomach-turning collapse.

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Below are the game highlights.