Matt Niskanen is day-to-day with the lower body injury he suffered during Wednesday’s 4-1 win in Philadelphia, Capitals General Manager Brian MacLellan said.

“It’s day-to-day; it’s not a serious injury,” MacLellan said. “He’ll be fine.”

Niskanen did not practice on Thursday and MacLellan said there's no timeline for the defenseman’s return.

“We’ll be cautious with it,” MacLellan said.

Niskanen was injured in the second period at Wells Fargo Center when he collided, leg-on-leg, with rugged Flyers defenseman Radko Gudas. The injury appeared to be to Niskanen’s left leg.

The Capitals play Edmonton and Nashville on Friday and Saturday, respectively.

Assuming Brooks Orpik is okay—he took a maintenance day to rest a nagging lower body ailment—the Caps will not need to make a move since they’ve got six healthy defensemen on the roster.

Niskanen leads the Capitals defensemen with 32 points (4 goals, 28 assists). The 30-year-old also plays a major role on the power play and penalty kill.

That said, the NHL’s top team will be in no rush to get him back in the lineup.

“We’ll make sure he’s 100-percent before he comes back,” MacLellan said.

MORE CAPITALS: Prospect report: Samsonov leads team to the KHL playoffs