Partick Thistle's promotion hopes were dealt a blow after Raith triumphed against the Jags at Stark's Park.Gregory Tade headed over for the home side and on-loan Dundee United striker Johnny Russell fired a shot against the visitors' crossbar in the first half.
Thistle goalkeeper Jonny Tuffey denied Mark Ferry and Craig Wilson before Rovers made the breakthrough.
Kevin Smith headed into the net with 17 minutes remaining to move Raith 11 points clear of eighth-placed Morton.
Raith: McGurn, Wilson, Ellis, Campbell, Murray, Walker (Sloan 6), Russell, Simmons, Kevin Smith (Weir 84), Tade, Ferry, Sloan (Gathuessi 72). Subs Not Used: O'Connor, Amaya.
Booked: Wilson, Tade.
Goals: Kevin Smith 73.
Partick: Tuffey, Paton, Conroy, Shields (Erskine 63), Robertson, Archibald, Cairney (Bryan Hodge 75), Rowson, Buchanan (Doolan 86), Donnelly, Corcoran. Subs Not Used: Halliwell, Boyle.
Booked: Shields, Cairney, Paton.
Ref: E Norris
Source: BBC Sport