Australia's two-time Olympic gold medallist Michael Diamond was edged out in a shoot-off for the men's trap bronze medal at the opening World Cup event in Acapulco, Mexico.
Shooting at his first international event since his fourth place at the London Olympics, six-time Olympian Diamond achieved the same result when he faced London silver medallist Massimo Fabbrizi in the shoot-off.
Diamond had qualified for the semi-finals in fifth place earlier on Monday, before winning through to the bronze medal contest with a score of 13 targets from 15.
Italian Valerio Grazzini won the gold medal with a score of 14 from 15 in the final, edging out Brian Burrows (USA) by two targets.
Diamond said his performance was a step in the right direction.
"I was able to use this event as a really good warm up for the world championships later this year," Diamond said.
"The more times I am able to shoot under the new rules internationally the better I will be prepared."
Australian International Shooting head shotgun coach Valeriy Timokhin said the pair would tweak some things ahead of the next World Cup (April 15-24).
"Michael missed a few different targets today but it will give us a few aspects to work on ahead of the next event in Al Ain," Timokhin said.
Fellow six-time Olympian Russell Mark will contest the World Cup men's double trap in Acapulco on Wednesday evening AEDT.