Bloemfontein [South Africa], December 7 (ANI): Half-centuries from Tony de Zorzi, Khaya Zondo and a hard-fought 75 off 180 balls (8 fours) from the opener, Sarel Erwee helped South Africa A to a competitive score at stumps on day one of the final four-day clash against India A at the Mangaung Oval in Bloemfontein on Monday.