I would settle for one every 10ish.
I know it's just the nature of sports slang and you can't fight common usage, but it still makes my head twitch a little.
Gretzky, Lemieux, Crosby, McDavid. That's four in 40 years, or one a decade on average. Gotta draw the line somewhere. Once you open it up to Ovechkin and Jagr, the slippery slope kicks in and next thing you know you're wondering if you should count Toews *and* Kane or just one.