 The Penguins received Tobias Lindberg from the Golden Knights in exchange for Reaves as part of a three-way trade also involving the Ottawa Senators.Reaves scored the series-winning goal over the Winnipeg Jets that qualified the Golden Knights for the 2018 Stanley Cup Finals.He also scored in Game 1 of the Stanley Cup Finals in a 6–4 Golden Knights victory, though Washington would come back and win the next four games.