Sean Higgins' first-half goal was enough for 10-man Ross County to leapfrog Raith Rovers back to the top of the Second Division.
County deserved their 34th-minute opener, Higgins driving the ball home after Andy Barrowman's header was saved by goalkeeper Keiron Renton.
County's Gary Miller's sent a shot against the post after the break.
Paul Lawson was shown a straight red card after 66 minutes, after which both sides missed chances to score.
Raith: Renton, Wilson, Dingwall (Carcary 80), Campbell (Lumsden 32), Tod, Winter, Sloan, Davidson, Weir, Hislop, David Templeton, Lumsden (Borris 39).
Subs Not Used: Helley, Fahey.
Booked: Renton, Winter, Hislop.
Ross County: Bullock, Miller, Golabek, Dowie, Keddie, McCulloch, Lawson, Strachan (Moore 77), Shields, Barrowman, Higgins (Scott 68).
Subs Not Used: Petrie, Gunn, Malin.
Sent Off: Lawson (66). Booked: Dowie.
Goals: Higgins 34.
Ref: C Charleston