A hat-trick from Jim Lister inspired Dumbarton as they came from behind to beat Raith Rovers.
The visitors were ahead inside four minutes, with Greig Spence finishing a slick move and Grant Anderson doubled Rovers' lead from 18 yards.
Lister scored from close range before the interval and levelled when he connected with a Paul McGinn cross.
Scott Agnew netted from the penalty spot after Bryan Prunty had been felled before Lister added a header.
Following the weekend's 4-3 comeback win at Dunfermline, the Sons leapfrog Cowdenbeath out of the relegation play-off place into eighth in the table, while Rovers are now just four points better off than Ian Murray's side.
Dumbarton: Grindlay, McGinn, Graham, Smith, Creaney, Gilhaney, Turner, Agnew, McDougall (Lamont 86), Prunty (Lithgow 85), Lister (Ronald 88). Subs Not Used: Ewings, Phinn.
Goals: Lister 36, 64, Agnew 70 pen, Lister 84.
Raith Rovers: McGurn, Thomson, Murray, Hill (Stuart Anderson 78), Malone, Grant Anderson (Clarke 82), Mensing, Walker, Watt (Hamill 71), Graham, Spence. Subs Not Used: Laidlaw, Donaldson.
Goals: Spence 4, Grant Anderson 25. Booked: Spence.
Ref: Bobby Madden