Second-tier Coventry were leading 1-0 at the 87th minute and looking much the better side when substitute Djed Spence slid home an equaliser a minute later.
Johnson, who had come on as a replacement for the injured Wilson Odobert, then fired past Ben Wilson five minutes later to seal the great escape.
The result came as a big relief to Postecoglou, as the home side were headed for a deserved upset over their English Premier League opponents until the late goals.
"It was a tough game. Credit to Coventry, I thought they were outstanding. It was a cup tie, and they really took it to us. We had to just hang in there somehow, and we did," said the Australian of last season's FA Cup semi-finalists.
Denne historien er fra September 20, 2024-utgaven av The Straits Times.
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Denne historien er fra September 20, 2024-utgaven av The Straits Times.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
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