Luke McCowan came off the bench to the score the winner at Celtic Park.
Celtic leave it late to beat St Mirren as they begin Premiership title defence with win on opening day
STV Sport · Aug 3
Celtic leave it late to beat St Mirren as they begin Premiership title defence with win on opening day

Celtic leave it late to beat St Mirren as they begin Premiership title defence with win on opening day
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