Middleton is day-to-day while he heals from a bruise, Michael Russo of The Athletic reports Tuesday.
Middleton's injury is not expected to be serious. The 28-year-old is coming off the most productive season of his NHL career -- the left-shot blueliner notched 25 points in 80 regular-season contests in 2023-24. Middleton earned a raise as a result, signing a four-year contract extension with Minnesota in July.