1998-99 - who won? 

Most sources (all the sources I can find actually) say LeClair.  Yet Karpovtsev did have a better plus/minus (+38) compared to LeClair (+36). The only reason I can think of that LeClair would be given the award over Karpovtsev is Karpovtsev only played in 58 games with the Rangers and Maple Leafs. Is there a minimum number of games a player must play in order to win the award?