San Jose Sharks forward Evander Kane announced the request on his Twitter account.
"There's clearly a racism problem in our sport," said Kane, a 28-year-old Canadian from Vancouver who is part of a new effort by black players to do something about it. "It's been pushed aside and covered up ever since I've been playing hockey. And that is a major issue that we need to suppress in a major way. That's where being able to create a more diverse game, that's where it's going to start."