Mercer finished the 2023-24 season with 20 goals and 33 points in 82 games.
Mercer scored two goals in Tuesday's 5-2 win over the Penguins.
Mercer scored two goals in Wednesday's 6-3 win over the Capitals.
Mercer scored a goal and added an assist in Thursday's 6-3 loss to Edmonton.
Mercer scored a power-play goal on three shots and went minus-2 in Friday's 6-3 loss to the Sharks.
Mercer produced a goal and an assist in Tuesday's 5-4 win over the Islanders.
Mercer had two shots, one blocked shot and a minus-1 rating in Thursday's 5-3 win over Minnesota as his season-opening point drought reached nine games.
Mercer earned three assists in Sunday's 8-4 win over Carolina in Game 3.
Mercer tallied a goal and an assist in Thursday's 4-0 win over the Rangers.
Mercer scored two goals, including the overtime winner, and added an assist in Thursday's 4-3 victory over the Kings.