Fehr has 2 goals and Caps top Predators 4-1
Gabriel Bourque scored for Nashville.
Grabovski, who was late to camp because of visa issues, assisted on both goals in his Caps debut Monday, a 3-2 overtime loss at Boston.
Grabovski disrupted a Nashville clear to set up Fehr's first goal at 4:37 of the first.
Grabovski's final assist came when he took a pass from Backstrom and passed it across the crease to Ovechkin for a power-play goal to make it 4-0 at 19:18 of the third period.