 However, Rangers were then defeated by Celtic in the first Old Firm match of the season, and the following month were eliminated from the League Cup by Aberdeen.On 29 December, Rangers defeated Celtic at Ibrox to inflict Brendan Rodgers' first defeat in 13 Old Firm games; Rangers first win over Celtic since a Scottish Cup victory in April 2016 and their first league win over Celtic since March 2012.Aberdeen knocked Rangers out of a cup for the second time in the season after securing a 2–0 victory in the Scottish Cup at Ibrox on 12 March 2019.