<P> Mark McGhee of Motherwell was appointed as Calderwood's replacement in June 2009 . McGhee controversially dismissed Aberdeen legend and goalkeeping coach Jim Leighton in August 2009 and replaced him with Colin Meldrum . Aberdeen suffered a 9--0 defeat to Celtic on 6 November 2010, their heaviest ever defeat . McGhee and his assistants were eventually sacked in December of that year . </P> <P> Aberdeen approached Craig Brown, who was working without a contract at Motherwell, to replace McGhee . Brown initially rebuffed an offer, but after further discussions with the club Brown resigned as manager at Motherwell to be announced as the next manager at Aberdeen two days later . The first act of the new management team of Brown and Archie Knox was to re-instate Leighton . Aberdeen failed to produce better results under Craig Brown's tenure, and in March 2013 he announced his retirement to take up a non-executive director role on the club's board . </P> <P> Derek McInnes was announced as the successor to Craig Brown in March 2013 . In McInnes' first season as manager, Aberdeen won the 2013--14 Scottish League Cup after defeating Inverness 4--2 on penalties, their first trophy in 19 years . Aberdeen finished third in the Scottish Premiership, and began the next season by coming through the early rounds of the Europa League, beating Dutch club FC Groningen before eventually being eliminated by Spanish side Real Sociedad . The club ended the season in second place--their best league position since 1993--94--in 2015, 2016, and 2017 . In recent seasons' Europa League competitions, they were defeated in the third qualifying round three times: In 2015--16 by FC Kairat, in 2016--17 by NK Maribor, and in 2017--18 by Apollon Limassol . </P> <P> Aberdeen were league runners - up once more in 2016--17 and reached both cup finals, but were beaten 3--0 by Celtic in the League Cup and 2--1 by the same opponents in the Scottish Cup, echoing the outcome in 1992--93 when Aberdeen had finished second to Rangers in all competitions . They were again second the following season, earning a first league win against Celtic away from home for fourteen years in the final game of the season . This qualified them for the 2018--19 UEFA Europa League, where they were defeated after extra time by Premier League side Burnley in the second qualifying round . </P>

When did aberdeen last win the scottish cup