Buffalo Sabres defenseman Rasmus Dahlin is out indefinitely with a concussion, the team announced Wednesday.

The 19-year-old phenom suffered the injury after taking an elbow to the head from Tampa Bay Lightning defenseman Erik Cernak on Monday. Cernak was given a two-game suspension for the hit.

Dahlin had been off to a strong start in his sophomore campaign. He's tallied 16 points in 24 games and ranks second on the club with 15 assists.

As a rookie in 2018-19, Dahlin became just the third 18-year-old defenseman in NHL history to record 40 points in a season and finished third in Calder Trophy voting.

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