Tkahuck registered a pair of power-play assists in Sunday's 5-3 win over the Oilers.
Tkachuk scored three goals, including two on the power play, in Saturday's 4-3 victory over the Islanders.
Tkachuk scored a goal on five shots, added three hits and went plus-2 in Thursday's 4-3 overtime loss to the Kings.
Tkachuk (upper body) is expected to play Wednesday against Anaheim, according to TSN 1200 Ottawa.
Tkachuk will miss Saturday's contest because of an upper-body injury.
Tkachuk (undisclosed) is expected to play Saturday against Philadelphia, per TSN 1200 Ottawa.
Tkachuk produced a goal and an assist while adding a team-high six shots on goal, four hits and a plus-1 rating in Thursday's 6-2 win over the Canadiens.
Tkachuk notched three assists in Tuesday's 7-4 loss to the Avalanche.
Tkachuk delivered a goal and an assist with four shots on net, three hits and a plus-2 rating in Saturday's 5-4 win over the Sharks.
Tkachuk scored two goals on a game-high eight shots on net while adding a hit, a blocked shot and a plus-3 rating in Tuesday's 6-2 win over the Rangers.