Alex Smith and Jocky Scott formed a co-managership of the club to replace Porterfield, and achieved a League Cup and Scottish Cup double in 1989–90. In the 1990–91 season, a run of twelve victories in thirteen games left Aberdeen sitting top of the table on goal difference ahead of Rangers, going into the final match of the season at Ibrox. A change of tactics (which eventually led to Jocky Scott leaving the club) and a Mark Hateley double gave the Championship to Rangers, and allowed them to continue on the Championship run that saw them eventually lift nine consecutive titles.