Florida Panthers defenseman Aaron Ekblad was suspended 20 games without pay Monday for violating the NHL and NHL Players’ Association’s policy on performance-enhancing drugs, taking him off the ice for the defending Stanley Cup champions’ stretch run and start of the playoffs.

Ekblad in a statement through the NHLPA said the news that he had failed a random drug test shocked him, and he apologized for the error.

“Ultimately, I made a mistake by taking something to help me recover from recent injuries without first checking with proper medical and team personnel,” Ekblad said. “I have let my teammates, the Panthers organization and our great fans down. For that, I am truly sorry. I have accepted responsibility for my mistake and will be fully prepared to return to my team when my suspension is over. I have learned a hard lesson and cannot wait to be back with my teammates.”