BOSTON (CBS) -- What Alex Ovechkin is doing this season has gotten to the point where it can no longer be ignored. No, I'm not talking about his goals. I'm talking about his plus-minus rating.

The NBA now uses so many ways to measure a player's efficiency, including their plus-minus. Fans who have looked at a box score will have seen that each player who stepped on the court will have this ...

* ITEM: A SURVEY ON THE MARGIN OF ERROR IN NHL PLUS/MINUS STATISTICS. Plus/minus was invented by the Montreal Candiens in the 1950s as a way to measure the two-way performance of NHL players. It’s now ...