In a pair of tweets this morning, the brother of Nicklas Backstrom said the Capitals' top center was tested for a concussion today after taking an elbow to the head in a 3-1 win over Calgary last night but that the results are inconclusive.

"Test done and the dr couldn't tell today but a small concussion/migraine. Have to wait for tmrw and a new test," wrote Kristoffer Backstrom in the second tweet, which has since been deleted. (Very blurry screenshot can be found here.)

Backstrom was elbowed in the head by Calgary's Rene Bourque midway through the second period Tuesday night. He returned to the ice for the remainder of the power play and for two more shifts, but then the Capitals took him out of the game for evaluation with 3:19 remaining.