Archie Campbell's hat-trick gave Morton their first win of the season as they inflicted a fourth consecutive defeat on Dumbarton with a 3-0 success at Cappielow.
Dumbarton tested the home side early on and Morton goalkeeper Derek Gaston had to be alert to tip Scott Agnew's 30-yard effort past a post.
The Torr came into the game and Michael Tidser's drilled 25-yard shot cannoned back off the woodwork.
Campbell broke the deadlock two minutes before the break with a left-foot shot into the bottom right-hand corner.
The striker grabbed his second with a well-placed penalty after Andy Graham had fouled David O'Brien.
And Allan Moore's men sealed the points when Campbell found the bottom right-hand corner from 12 yards after 76 minutes.
The striker squandered the chance of a fourth goal when his 89th-minute penalty struck the crossbar.