William Nylander shares details about his mysterious injury.

The Toronto Maple Leafs had to deal with a number of injuries in the opening round of the Stanley Cup playoffs, many of which still remain cloaked in a shroud of mystery.

One of the biggest mysteries in this series was the sudden and unexpected absence of Maple Leafs star forward William Nylander to start the series. Nylander had played all 82 games in the regular season, and in fact has very rarely missed games at any point during his NHL career, so his absence truly did come as a huge surprise.

Speculation has been that Nylander was dealing with some sort of migraine-related issue, and following the Maple Leafs' elimination in Game 7 on Saturday night, Nylander confirmed to reporters that this was indeed the case. Nylander provided some additional details revealing just how serious the situation had been for him to be unable to step out onto the ice.

"I don't know exactly what it was," admitted Nylander. "They kept me precautionary to see what was going on. I had a migraine but in case it could have been a concussion... once I started feeling better they let me play."

When pressed for more details, Nylander did his best to answer honestly.

"The situation is very complicated it's hard to explain exactly what it is," admitted Nylander. "My vision goes, I can't really see out of my eyes it gets kind of messed up, so yeah it's hard to play.

That is pretty wild and certainly everyone can understand why you wouldn't be able to play hockey at the National Hockey League level while being unable to see.

Nylander comments stood out if only because fellow teammate Auston Matthews was not so open about his absence during the opening round of the Stanley Cup playoffs.