Pacemen Makhaya Ntini and Jacques Kallis grabbed four wickets each to earn South Africa the early advantage on day one of the deciding third Test against Pakistan on Friday.However, the visitors fought back, reducing South Africa to 131 for five at stumps after Pakistan were dismissed for 157. South African skipper Graeme Smith scored 64.Ntini took four for 44 and Kallis claimed four for 42 after Pakistan were put in to bat on a pitch that offered bounce and movement off the seam, ending the innings off the last ball before tea.Mohammad Yousuf hit 10 fours and a six to be the top scorer with 83 off 131 balls. Imran Farhat (20) and Mohammad Hafeez (10) were the only other batsmen to reach double figures.Pakistan went to lunch at 70-4 and captain Inzamam-ul-Haq fell straight after the break when he edged a delivery from Andrew Hall to Boucher for 6. Kamran Akmal was caught by de Villiers off Steyn for a duck before Mohammad Sami and Yousuf put on a 60-run stand. They were finally out for 157.Brief scores: Pakistan 1st innings 157 (Yousuf 83, Farhat 20; Kallis 4/42, Ntini 4/44) vs South Africa 131/5 (Graeme Smith 64, Jacques Kallis 28; Mohammad Asif 2/20).