The defenseman did not play in a 6-1 loss to the Colorado Avalanche on Tuesday because of an upper-body injury but was on the ice before the team practiced Wednesday.
"He's questionable for tomorrow against Detroit but it's definitely not a long-term injury," Sabres coach Ralph Krueger said. "You can say he remains day to day for sure with this upper-body setback. We'll keep monitoring it."
Krueger said Dahlin didn't participate in practice because the team wanted to be cautious.
"Yeah, that's for sure. We're just being really careful here to make sure that he's a hundred percent if he comes back in," Krueger said. "We did not feel that today."
The No. 1 pick in the 2018 NHL Draft, Dahlin has 30 points (three goals, 27 assists) in 44 games this season and 74 points (12 goals, 62 assists) in 126 NHL games.
NHL.com independent correspondent Heather Engel contributed to this report
