Kovalchuk, who turned 30 today, will miss his 10th straight game on Monday with a right shoulder injury. The Devils visit Air Canada Centre to face the Toronto Maple Leafs.
According to Devils coach Pete DeBoer, Kovalchuk had a good skating session on Sunday and will skate again on Monday in New Jersey.
"I would call him day-to-day," DeBoer told local reporters. "My conversation with [Kovalchuk] before we left New Jersey [Sunday] was he had a good day [Sunday] morning, he was going to try to have another good one [Monday] and we would talk tomorrow morning."
"Brad has been diagnosed with a mild concussion," general manager Peter Chiarelli said in a statement. "We will provide an update on his status when appropriate."
With regular starter Semyon Varlamov scratched due to a hip injury and the Colorado Avalanche playing their third game in four nights, they will turn to Sami Aittokallio on Thursday against the Los Angeles Kings (10:30 p.m. ET, NHLN-US, NHLN-CA).
The team announced via its Twitter feed Thursday that the 20-year-old will be making his first NHL appearance after veteran goaltender Jean-Sebastien Giguere started four of Colorado's past five games, posting a 1-2-1 record.
A fourth-round pick in the 2010 NHL Draft, Aittokallio has spent much of the season playing for Lake Erie of the American Hockey League. In 26 games with the Monsters, the native of Tampere, Finland posted a 2.89 goals-against average and .903 save percentage. He was the starting goaltender for a Finland squad that finished fourth at the 2012 IIHF World Junior Championship.
Letang has missed the past six games with a lower-body injury believed to be a broken toe. He is third among NHL defensemen with 28 points despite playing in 28 games.
Bergeron has missed the past four games with a concussion, but Wednesday, Bruins general manager Peter Chiarelli told a local radio station, 98.5 The Sports Hub, that Bergeron had begun working out and is "on his road to recovery."
Here are the projected lineups for the Sharks and Red Wings:
Schultz recorded 18 goals and 48 points in 34 games with the Oklahoma City Barons, including a franchise record-tying 10-game point streak and a separate nine-game point streak.
Schultz still leads all AHL defensemen in points and was only recently surpassed as the top rookie scorer.
"It's an honor," Schultz said prior to Edmonton's game Wednesday night against the Phoenix Coyotes. "It's a great league. I had a blast down there."
With one goal combined over a current two-game losing streak, the Columbus Blue Jackets welcomed some important reinforcements when they took to the ice Tuesday before their game against the San Jose Sharks.
The Blue Jackets defense, which has dealt with injuries through much of the season, saw Tim Erixon and Nikita Nikitin return to practice. The blueliners each had and upper-body injury but have been cleared to play against San Jose. Another defenseman, Dalton Prout, is a game-time decision.
New York Islanders coach Jack Capuano admitted his approach to his team would not change heading into a crucial Atlantic Division matchup Tuesday against the Philadelphia Flyers. And in the true spirit of "business as usual," he revealed Evgeni Nabokov would be starting in net for the Islanders.
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My focus is always just to play as well as I can and do my job, no matter where the faceoff is.