Anaheim Ducks’ goaltender Frederik Andersen has been ruled out of the lineup with a concussion. The team announced the news via Twitter today.

INJURY UPDATES: Andersen is out with a concussion suffered in the game vs. CGY. Rakell (appendicitis) is out one week. — Anaheim Ducks (@AnaheimDucks) April 1, 2016

The injury, suffered vs. the Calgary Flames on Wednesday night, will keep Andersen out of the lineup tonight when the Ducks face the Canucks at the Honda Center in Anaheim. However, no timetable has been set for Andersen’s return, so it’s unknown exactly how long he’ll be out.

The Ducks will turn to John Gibson in Andersen’s absence and have recalled Anton Khudobin from their AHL affiliate to serve as Gibson’s backup.

The Ducks are seeing a rash of injuries at the worst possible time, as they’ve also announced that forward David Perron will miss 4-6 weeks with a separated shoulder and as the above tweet mentions, Rickard Rakell will miss time with appendicitis.

Andersen boasts a record of 21-9-4 this season to accompany his 2.36 goals-against average and .917 save-percentage. The Ducks are 43-23-10 and battling the Los Angeles Kings for first place in the Atlantic Division. The Kings are currently one point ahead of Anaheim in the standings.