Rocco Quinn's second-half strike sent Ross County to the top of the table after a 2-1 win over Dundee.
County had to come from behind when Matthew Lockwood scored a penalty in the 25th minute to give Dundee the lead following Marc Fitzpatrick's foul on Nicholas Riley.
Derek Adams' side had not lost in their previous eight league fixtures and they were back on level terms six minutes before half-time.
Quinn sent in a cross from the left and Colin McMenamin's scuffed effort trickled over the line from inside the six-yard box.
The visitors grabbed the crucial goal just after the hour mark when Quinn drilled a right-foot shot into the far corner from just outside the penalty area.
Dundee: Douglas, Benedictis (Rae 57), McGregor, McKeown, Lockwood, Riley, O'Donnell, Irvine, Conroy, Bayne (Mcintosh 65), Milne. Subs Not Used: Gibson, Chisholm, Weston.
Goals: Lockwood 25 pen.
Ross County: Fraser, Miller, Munro, Boyd, Fitzpatrick, Morrow (Gardyne 78), Quinn, Lawson (Corcoran 62), Vigurs, Brittain, McMenamin. Subs Not Used: Malin, Byrne, Flynn.
Booked: Fitzpatrick, Lawson, Brittain, Gardyne.
Goals: McMenamin 39, Quinn 63.
Ref: Stephen Finnie