The NHL trade deadline used to be a week or two ahead of the end of the season. In 1995, it was on April 6th (pushed back due to the half-season long lockout) and on that day a name that was cemented into Toronto Maple Leafs history left the team after only 150 games.
On April 6th, 1995 the Toronto Maple Leafs traded Nikolai Borschevsky to the Calgary Flames in exchange for a 1996 6th round pick.
Drafted in the 4th round in 1992, Borschevsky left Spartak Moskva and joined the Leafs at the start of the 92-93 season.