In the 2018-19 season's playoffs, all top seed teams were eliminated in the very first round.
- The Atlantic division winners, Tampa Bay Lightnings who tied the most number of wins in a season were swept by the Columbus Blue Jackets
- The Metropolitan division winners and the defending champions, Washington Capitals lost to Carolina Hurricanes in 7 games
- The Central division winners, the Nashville Predators fell to Dallas Stars in 6 games.
- The Pacific division winners, Calgary Flames lost to Colorado Avalanche in 5 games.
Throughout the years the NHL playoffs format has changed many times, but given the current format, this is the first time all division winners are knocked out on the first round. How many times in the history of the Stanley Cup, all top seeds were eliminated in the first round of the playoffs?