Jack Laugher has narrowly missed out on securing a hat-trick of titles at the World Junior Diving Championships in Adelaide.
The 17-year-old Olympian was beaten into second place by China's Peng Jianfeng in the boys' one-metre springboard.
Alicia Blagg and Hannah Starling also claimed second in the girls' 3m synchro to continue Great Britain's impressive meet and leave them second in the medal table.
Laugher won the 3m springboard and the 3m synchro, alongside Tom Daley, on the opening two days of competition but missed his penultimate reverse two-and-a-half somersaults to deny him a third gold in the South Australian capital.
Laugher's silver medal meant he finished a remarkable junior career with four youth world titles after he won the 3m and 1m lower age group springboard events in Tucson two years ago.
The Ripon diver has been touted as a future senior world champion by American diving legend Greg Louganis, and has established himself inside the world's top 10 in the past 12 months despite a disappointing London Olympics that saw him crash out in the first round of the 3m springboard.
"I guess 4 junior world titles is what I'll have to settle on :P haha! I'm so happy :)," Laugher wrote on his Twitter page.
Great Britain are behind diving superpower China on the medal table after City of Leeds duo Blagg and Starling won their silver medal.
Starling won Team GB's first-ever girls' world junior medal on Wednesday, when she took bronze in the 3m springboard, and went one better as she teamed up with Blagg in competition for the first time in six years.
The pair scored 278.70 to finish nine points behind gold medallists Zheng Qulin and Liu Jiao from China.