Dahlstrom, 27, has been up and down with the Leafs throughout the year, but has appeared in just 2 games with the Buds this season, recording one lone assist.
It's unknown if there is another defender, aside from Jake Muzzin and Rasmus Sandin, who might be a bit banged up at the moment or whether the Leafs may just want to carry a 7th defenseman with them to Washington on Sunday.
Muzzin and Sandin are both nearing returns but remain out of the lineup, leaving the Leafs with the pairings of Morgan Rielly/Ilya Lyubushkin, Mark Giordano/Timothy Liljegren, and T.J. Brodie/Justin Holl.
Dahlstrom could jump into the lineup tomorrow night, but it seems like unless there's another injury, Dahlstrom is up as insurance with the Leafs' back-to-back this weekend with the Panthers and Capitals.
Either way, Dahlstrom is up with the big club at least for the time being.