JOHANNESBURG (AP) — Thriston Lawrence held on to win his home South African Open by one shot despite a final-round 2-over 74 at the Blair Atholl course on Sunday. Lawrence started the day with a two-shot lead over Clement Sordet of France and despite extending his advantage to five strokes early on the back nine, the South African only just managed to hold off his playing partner to finish with an overall 16-under 272.