Left Defense - The left defenseman is situated on the left side of the goalie, and, like I mentioned before, they are not supposed to skate past the center line. Left defenders are responsible for covering the left hand side of the defensive zone. Like I said before, the defenders will do anything to get the puck away from the attacking teams. Probably the most difficult position, the goalie is responsible for saving shots and preventing goals. It also seems like goalies attack the most attention from the crowd and announcers, but that isn't really an important factor.
Goalies are probably the most important players in a hockey team.
When a team loses or something goes wrong, the goalie usually gets blamed.