It's been a difficult three weeks for Jaromir Jagr.

The 46-year-old, who has long been praised for defying Father Time, was waived by the Calgary Flames Jan. 28 and left the NHL to rejoin his hometown team HC Kladno in the Czech Republic.

Jagr's transition back to Europe started off strong as he recorded two assists in his first period of play with Kladno, but things took a negative turn on Saturday.

In a game against HC Havirov, Jagr was on the receiving end of a vicious hit from behind and his head collided violently with the boards.

Havířovský Sikora právě takhle atakoval Jaromíra Jágra, který se už delší dobu nezvedá. pic.twitter.com/pSGlBp2JoG — Vilém Franěk (@vildafranek) February 17, 2018

Jagr remained down on the ice for a few minutes following the play, but was eventually able to get up to his feet and skate into the locker room with the assistance of a trainer.

His jersey appeared to have some traces of blood on it around the neck area.

HC Kladno forward Jaromir Jagr was injured after being taken down hard into the boards.



A stretcher was taken out, but Jagr eventually stood up and was helped off the ice by a trainer. pic.twitter.com/KTTETqO2lt — Complete Hockey News (@CompleteHkyNews) February 17, 2018

Kladno avenged the loss of Jagr and won the game 3-1.

It is still unclear what the extent of his injury is.