This trade is the root of the Drew Bledsoe (2002) trade tree — the full chain is traced there.
New England traded Drew Bledsoe to division rival Buffalo for a 2003 first-round pick after Tom Brady took his job. The Patriots moved the pick up one spot to draft Ty Warren; Bledsoe threw for 4,359 yards and made the Pro Bowl in his first Bills season.
On April 21, 2002, Buffalo Bills sent a 2003 first-round pick (No. 14, became Michael Haynes) to New England Patriots for QB Drew Bledsoe.