Rain halts England charge after South Africa avoid follow-on

• Third Test, day three: England 353 & 74-1; South Africa 175
• England extend lead to 252, with Keaton Jennings on 34The equation has a familiar ring. The side batting last in this Test will be required to bat for more than four sessions to avoid defeat. So far in the series that has been way beyond the capacity of the batsmen. At Lord’s England won by 211 runs; at Trent Bridge South Africa prevailed by 340.Will it be just as straightforward at The Oval? If the South African