Luck's a complicated thing in hockey. I tend to think that hockey people don't weight it enough and analytics people (including me, no doubt) overweight it. I think of what we call luck as being like the darkness in an unlit room with weird angles and some candles fixed in place, although not enough to light all the crannies. If you can find the candles and get them lit, you can shrink the darkness. You'll never be able to get rid of it all though, because pucks hit feet, referees blow calls – luck happens.
(Part of what we perceive as “luck” changes as a result of adjustments too.
Dellow: Risk, reward and the Dustin Byfuglien question
