The NHL's Vezina Trophy is awarded to the goalie "adjudged to be the best at this position," as voted by the league's general managers.
It's one of the NHL's oldest awards, having been donated by the Montreal Canadiens in 1927 after the death of legendary goalie Georges Vezina of tuberculosis in 1926.
Last year, Boston's Tim Thomas was the winner of the award for the second time in three years.
Thomas is one of several players who deserve strong consideration this year, but fall just short of being a finalist. Others include either of the Blues' duo of Jaroslav Halak and Brian Elliott, Mike Smith of Phoenix and Jimmy Howard of the Red Wings.
But three goalies stand above the rest as worthy finalists with about 20 games left on the league schedule.