Stephen Robinson believes defensive lapses cost St Mirren dearly against St Johnstone.
The Buddies’ backline were all at sea for Nicky Clark’s opening goal, with the visitors cut open with ease for the home side’s second and third.
With the Paisley club also toothless up front, Robinson was disappointed his previously solid defence, which went into Saturday’s clash on the back of three clean sheets, came undone so easily in Perth.
