 In the same game, he scored his 20th goal of the season to tie Alexandre Daigle for the Senators' record for most goals by a teenage player in a season.Tkachuk finished the 2018–19 season with 22 goals, the second-highest among NHL rookies, behind Elias Pettersson's 28.Tkachuk was selected on January 22, 2020 to replace injured player Auston Matthews on the Atlantic Division roster for the 2020 National Hockey League All-Star Game in St. Louis.