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Harry Kane's stoppage-time header clinched a tense 2-1 win for England in its opening World Cup game against Tunisia.

Kane opened the scoring in the 11th minute during England's dominance of the early stages. But Tunisia equalized when Ferjani Sassi calmly slotted a penalty in the 35th and pushed the young England lineup right to the limit.

Kane's winning header came as the clock had just ticked over into injury time. Standing alone at the far post he guided a Harry Maguire header into the Tunisian net.

His winner came at the end of a second half during which Tunisia defended deep and nullified England's attacking intent.