John Sheridan's Plymouth claimed their first Sky Bet League Two win of the season with a 3-0 home victory over Devon rivals Exeter.
Nearly 12,000 fans at Home Park saw the hosts coast to victory thanks to strikes from Tyler Harvey, Reuben Reid and Curtis Nelson.
The warning signs for the Grecians were there as early as the third minute when Pilgrims skipper Nelson crashed a powerful header off the crossbar from Ollie Norburn's corner.
Plymouth-born teenager Harvey celebrated his late call-up for the derby by curling home a free-kick from the angle of the box into the top corner past Exeter keeper Christy Pym on 14 minutes.
Harvey, 19, was called into the starting line-up in place of injured playmaker Lee Cox, who was ruled out by a thigh strain.
He also provided the final pass to put striker Reid in on goal to make it 2-0 in the 36th minute after a sweeping move that also involved Argyle attackers Lewis Alessandra and Jason Banton.
Nelson then finally got his reward, pouncing on a loose ball following a goalmouth scramble and corner to smash the ball home from six yards in the 83rd minute.