November 3rd, 1999 - Claude Lemieux was traded to the New Jersey Devils. The Avalanche sent Lemieux, a 1st round pick (David Hale) and a 2nd round pick (Matt DeMarchi) to the Devils for Brian Rolston and a 1st round pick (Martin Samuelsson). Lemieux was just 13 games into his 5th season with the Avalanche.
Rolston would not spend much time in Denver. He and that first round pick (and Martin Grenier and Sammy Pahlsson) were traded to Boston just 4 months later for Ray Bourque and Dave Andreychuk.