Chinese-Taipei’s Chan Shih-chang sensationally took the halfway lead in the Royal’s Cup today after acing the par-three 16th and eagling the closing hole, a par five, at Grand Prix Golf Club.

Bangkokian Nattawat Suvajanakorn hit an ace on the seventh hole to share the clubhouse lead with teenage amateur Tanapat Pichaikool in the rain-disrupted Singha All Thailand Memorial in Chanthaburi on Thursday.