Steve Smith withdrew from the third Test of the Ashes series against England on the morning of the opening day’s play. Cricket Australia has confirmed Smith had been suffering from “nausea and dizziness” in the lead-up to his shock withdrawal from the Adelaide Test. The late withdrawal allowed Usman Khawaja a rare opportunity to play in the series, which he has grabbed with both hands, leading Australia on a tricky day’s play thus far. Khawaja had started slowly and had reached 5 from 27 balls when Harry Brook dropped a regulation catch at second slip. From that moment on, Khawaja changed his intent, and started to hit more shots. Smith had even done his warm-ups at the Adelaide Oval, but had to leave the stadium after a chat with the coach Andrew McDonald. Smith had led Australia in the first two Tests, but luckily, for them, Pat Cummins had come back for this game to take over the leadership role. Smith has been feeling unwell in the last few days. “Over the past few days …