Australian Michael Diamond hasn't missed a target through two rounds of qualifying in the men's trap event as the veteran shooter bids for a third Olympic gold medal.
Diamond sits alongside Giovanni Cernogoraz from Croatia at the top of the leaderboard as the only shooters to have hit all 50 targets after two rounds of qualifying at the Royal Artillery Barracks on Sunday.
They are one shot ahead of a group of eight shooters who have a combined score of 49 points from the first two of five qualifying rounds.
The event got underway amid overcast conditions and competitors were forced to endure heavy rain during the morning before the sun emerged.
Diamond's Australian teammate Adam Vella posted scores of 23 and 23 in his first two rounds for a combined total of 46, while Glenn Kable of Fiji was on 45 points.
The 40-year-old Diamond, who is competing at his sixth Olympics, won gold in the men's trap at the Atlanta Games in 1996 and repeated the feat on home soil in Sydney four years later.
Vella was a bronze medallist in the trap at Athens eight years ago.
Competitors will shoot three qualifying rounds on Sunday, with two more qualifying rounds and the final on Monday, the last day of the shooting competition at the London Olympics.
The top six shooters after the qualifying rounds will shoot for gold.