Johnston scored two goals on eight shots, added an assist and went plus-2 in Monday's 5-1 win over the Avalanche in Game 4.
Johnston earned a pair of assists in a 3-2 win over the Golden Knights in Game 5 on Wednesday.
Johnston scored a goal and added two PIM in Saturday's 4-1 win over the Kings.
Johnston tallied a goal and an assist in Tuesday's 4-3 loss to the Panthers.
Johnston recorded a hat trick, two assists, six shots on goal and a plus-2 rating in Tuesday's 7-6 overtime win over the Sharks.
Johnston posted an assist and five shots on goal in Thursday's 4-1 win over the Jets.
Johnston scored a goal and blocked three shots in Saturday's 2-1 win over the Hurricanes.
Johnston posted a power-play assist in Saturday's 4-3 overtime loss to the Oilers.
Johnston scored a goal on four shots in Saturday's 5-4 overtime win over the Capitals.
Johnston notched three assists while adding four shots on net, two PIM and a plus-3 rating in Tuesday's 5-4 win over the Red Wings.