Doughty stepped into the NHL immediately after he was drafted. Petry took another four full seasons before he even signed his first professional contract. Despite Doughty being 22 years old and Petry 24 years old, Doughty has 208 more NHL games under his belt. Those numbers tell the average fan that Doughty is the far superior player, a perception almost anyone who pays attention to the game has. That being said, numbers from this season don't paint such an obvious picture, at least from an advanced statistics point of view.
Defensive Comparisons
We'll start on the defensive side of the game, considering that Petry and Doughty's responsibilities are primarily in their own end. During the regular season, it was clear that Drew Doughty was not playing up to the level that he had showed in previous seasons. Defensively the advanced stats are limited, however there are a few numbers that can be used. Relative Corsi is a number calculated to measure puck possession and which team controls the flow of play when a particular player is on the ice. There is an excellent definition of the term in this piece Relative Corsi is measured by taking the Corsi number of a player and subtra...
Article Source: Bleacher Report - Los Angeles Kings