RIO DE JANEIRO Aug 13 (Reuters) - Latest news from the eighth day of competition at the Rio Olympics on Saturday (times GMT): 1405 VAN ZYL HITS HOLE-IN-ONE South Africa's Jaco Van Zyl sank Olympic golf's second hole-in-one in the par-three eighth hole in the third round of the men's competition. Britain's Justin Rose hit golf's first hole-in-one in the Olympics on Thursday, as the game returns to the Olympics for the first time since 1904. ... More...