COLOMBO, July 26 (Reuters) - South Africa were all out for 282 in their first innings in reply to Sri Lanka's 421 on the third day of the second test on Saturday. Scores: Sri Lanka 421 (M. Jayawardene 165, N. Dickwella 72, A. Mathews 63) v South Africa 282 (H. Amla 139 not out; D Perera 5-69) (saadithawfeeq@gmail.com)