On the eve of the NHL's free-agency signing period, the Tampa Bay Lightning and Chicago Blackhawks parted ways with key cogs of Stanley Cup-winning eras for both franchises, allowing both some maneuverability moving forward.

On Tuesday, Tampa Bay traded forward Tyler Johnson and a 2023 second-round draft pick to Chicago in exchange for defenseman Brent Seabrook, both teams announced, in a complicated move that involves a long-term injury.