MELBOURNE, Australia (AP) — Antonio Murdaca shot a 5-under 67 on Saturday to open a commanding 8-shot lead heading into the final round of the Asia-Pacific Amateur Golf Championship. The 19-year-old Australian took a 1-shot lead into the third round after shooting 69 and 68 as the only player in the tournament to break 70 in the first two rounds. Murdaca is now poised to become the first Australian to win the Asia-Pacific tournament and, as this year's winner, an invitation spot at next year's U.S.