Cricket-South Africa declare on 259-9 after du Plessis ton

ADELAIDE, Nov 24 (Reuters) - South Africa declared on 259 for nine in the final session of the opening day of the day-night third test against Australia at Adelaide Oval on Friday. Faf du Plessis, captaining the Proteas despite being found guilty of ball-tampering on Tuesday, scored 118 not out, while Josh Hazlewood led Australia's bowlers with 4-68. South Africa lead the three-match series 2-0 after dominant victories in Perth and Hobart. (Reporting by Nick Mulvenney, editing by Sudipto Ganguly)