South Africa left the World Cup with a defiant raspberry, defeating Australia by 10 runs in another Old Trafford last-over thriller to set up a semi-final between England and Australia on Thursday. Tension had mounted after the result zipped across from Headingley, which meant Australia had to beat South Africa to finish top of the table – fail, and India would tuck into the freshly prepared New Zealand fattened calf, tender and soft, and send the reigning champions instead to Birmingham. In the royal box at Wimbledon, Eoin Morgan licked his lips and ordered another Pimm’s: meeting Australia at Edgbaston in a semi-final was a far tastier proposition than at Lord’s next Sunday. The very last match of the long round-robin stage suddenly mattered. Australia had chased only twice in this World Cup, once against Afghanistan, and once, badly, against India. Patched together and limping, and after a lacklustre bowling performance, a target of 326 looked unlikely. At 119 for four at nearly halfway, it seemed off-piste. But there was David Warner, brisk and businesslike, short little legs prickling with determination, bursting chest-proud during the national anthem, slapping the ball high and long – for midwicket sixes and back over…