Marc McNulty's double helped Livingston record their first win of the season with victory at Dumbarton.
Mitch Megginson gave the hosts a first-half lead but McNulty's second-half brace brought John McGlynn his first win as boss.
Dumbarton wasted an early opportunity when Mark Gilhaney fired wide from long range, when a pass to Colin Nish would have been a better option.
But they went into half-time with a one-goal advantage through Megginson's sweetly-struck volley from close range.
The lead lasted three minutes into the second half when Mike Mampuya's cross was met in the middle by McNulty, who swept home a right-footed strike into the bottom corner.
McNulty secured the three points as grabbed his second with 15 minutes left, smashing home Connor McDonald's cross into the top left-hand corner from the edge of the area.
Dumbarton: Ewings, McGinn, Barry, Graham, Linton (Kevin Smith 81), Gilhaney, Hugh Murray (Prunty 80), Turner, Agnew (Fleming 77), Megginson, Nish. Subs Not Used: Grindlay, Scott Smith, Kirkpatrick, McKerracher.
Goals: Megginson 44.
Livingston: Jamieson, Mampuya, Donaldson, Mensing, Fordyce (Jacobs 46), McDonald, O'Brien, Scott, Scougall (Burchill 77), McNulty (Denholn 90), Barrowman. Subs Not Used: Walker, Wilkie, Mullen, Lander.
Goals: McNulty 49, 76.
Ref: Greg Aitken