Michael Clarke passed 200 in an innings for thethird time this year, continuing his exemplary batting form since taking overas Australia captain and guiding the hosts to a first-innings lead Mondayagainst top-ranked South Africa.
Clarke finished the fourth day unbeaten on 218 — his 20thcareer test century and his sixth since replacing Ricky Ponting as skipper lastyear — as he guided Australia to 487-4 in reply to South Africa's 450.
After coming in with Australia in trouble at 40-3 lateSunday, he shared a record 259-run, fourth-wicket partnership with opener EdCowan — who posted his maiden test hundred before he was run out for 136 — andan unbeaten 188-run fifth-wicket stand with Mike Hussey, who was not out 86.