Tkachuk scored a pair of power-play goals on eight shots and added an assist in Sunday's 4-3 loss to the Jets.
Tkachuk tried to lead the Senators' comeback effort in the third period, but they came up one short. The 22-year-old has impressed in April with three goals and five helpers in six games. The physical winger has put up a career year across the board with 26 goals, 30 helpers, 13 power-play points and a minus-6 rating in 69 contests. He's added 249 shots, 241 hits and 113 PIM.