The Toronto Maple Leafs made a potentially franchise altering trade on early in the year 1999.
The Leafs sent disgruntled former starter Felix Potvin (no longer needed because they signed Curtis Joseph as a free-agent the previous summer) to the New York Islanders in exchange for Bryan Berard.
Berard was a former first overall and Calder Trophy winning defenseman, who for some reason the Islanders gave up on.
Berard played in just games for the Leafs before an errant stick from Marion Hossa cost him the vision in one of his eyes.