(CNN) -- Paceman Peter Siddle claimed five victims in a Test innings for the first time as Australia ended the third day in Sydney leading South Africa by 151 with all second innings wickets standing.
Australian paceman Peter Siddle claimed five victims in a Test innings for the first time.
Siddle, who returned impressive figures of five for 59 in 27.5 overs, captured the final four wickets in the space of 22 balls as Australia restricted the Proteas to 327.
Mark Boucher put up a determined performance for the tourists -- they won the opening two Tests to win the three match series -- and ground out a patient 89 in 265 minutes having arrived at the crease with the score 166-4.
Boucher shared in a 115-run sixth-wicket partnership with Morne Morkel who was bowled for 40.
Siddle then trapped Paul Harris leg before for 2 and Dale Steyn (6) before also clean bowling Boucher to end the innings.
Australia openers Matthew Hayden (18) and Simon Katich (9) survived a testing six-over period before stumps to reach 33 without loss -- a lead of 151.
Earlier Mitchell Johnson had Jacques Kallis caught at slip for 37 and also trapped JP Duminy (11) leg before, as South Africa tried to come to terms with losing their skipper Graeme Smith with a broken hand.
Debutant Andrew McDonald took his first Test wicket -- removing Hashim Amla (51) lbw -- as the Proteas' strong overnight position of 125 for one deteriorated.