Edmonton Oilers defenseman Andrej Sekera is sidelined indefinitely after undergoing successful Achilles tendon surgery, the team announced Tuesday.

Sekera suffered the injury during offseason training. No timeline has been provided for his return.

It's a devastating injury for Sekera, who was limited to just 36 appearances in 2017-18. He also missed the first 34 games of last season as he recovered from summer knee surgery.

Sekera finished last year with eight assists while averaging more than 16 minutes in ice time. The 32-year-old is signed through the next three seasons at a $5.5-million cap hit.

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