Ovechkin left Sunday's game against the Columbus Blue Jackets 6:10 into the second period with what the team described as an upper body injury. Ovechkin later confirmed the nature of the injury and called himself day to day. Coach Bruce Boudreau said the same thing.
Ovechkin was also asked if the injury is serious, and his response was, "I don't know."
That's all we'll really know until the team reconvenes Tuesday for practice at Kettler Capitals Iceplex in Arlington, Va. The Capitals play next in New Jersey Wednesday.
According to reports from the Washington Post, Ovechkin was not wearing a sling, but did appear to be favoring his left arm during his post-game gathering with the media in front of his locker.
"I can't tell you how I got hurt," a vague Ovechkin said. "It's day to day, but just in case I didn't go back on the ice."
Ovechkin leads the NHL with 14 goals and 23 points in 14 games. He was limited to 10 shifts totaling 7:43 of ice time and only one shot in Sunday's game.
The Capitals, meanwhile, have picked up points in nine straight games, but have lost their last two in overtime and have struggled in the latter stages of late.
Washington on Sunday had a pair of leads evaporate in the third period before taking a penalty in overtime that allowed R.J. Umberger to score the winner.
Brooks Laich scored twice within a span of 2:08 to give the Caps a 3-2 lead halfway through the third period, but Raffi Torres scored a pair sandwiched around Quintin Laing's first of the season to force overtime. Torres tied the game with 23 seconds left.
Brian Pothier was then called for interference 1:33 into the overtime and Umberger scored his game-winning power-play goal just 12 seconds later. Boudreau called Pothier's penalty "stupid" and later described it as "selfish."
He was happy that the team rallied to take a lead in the third, but the end result and the way it happened was certainly bothersome.
"It was like rallying around Ovi getting hurt in the third period and we outworked them and probably deserved a little bit better fate," Boudreau said, "but we shoot ourselves in the feet a lot these days."
Contact Dan Rosen at firstname.lastname@example.org