Mantha logged a pair of assists in Tuesday's 6-3 loss to the Avalanche.
Mantha grabbed his first assist on Connor McMichael's first-period tally before setting up Alex Ovechkin's power-play marker in the third. The 29-year-old Mantha now has seven points (four goals, three assists) in his last eight contests. He's up to 16 goals and 26 points through 48 games this season.