Celtic have eased into the draw for the quarter-finals of the Scottish Cup with a 2-nil victory at St Mirren.
Japan duo Kyogo and Daizen Maeda got the goals for the holders.
Franny Kiernan reports
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Hearts aim to avoid a fifth round upset when they visit Championship side Airdrieonians.
Dundee got a late winner a dramatic 2-1 comeback victory at home to St Johnstone in the Scottish Premiership.
The hosts had striker Michael Mellon stretchered off in the closing stages after suffering a head knock in the Tayside derby.
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Dundee remain sixth, but go three points clear of seventh-placed Hibs.
