Siblings David and Emma McKeon made it a family affair at the FINA World Cup in Singapore. The teenage duo picked up gold in three events between them, while 17-year-old Cameron McEvoy was eye-catching in an upset 100m freestyle victory.

Youth Olympic Games medallist Emma McKeon produced personal best times in her 100m freestyle heat and final to take gold ahead of Sweden’s short course specialist Therese Alshammar.

McKeon hit the wall in an impressive 53.41 with Beijing bronze medallist Cate Campbell third in 53.47, Merindah Dingjan from the AIS fourth in 53.75 and Libby Trickett finishing fifth in 54.61 in her first final of the night.

“That’s a half a second personal best for me, which is great and seeing Dave win the 1500m gave me and extra little kick,” said Emma McKeon.

“I used to, and still do, look up to those girls (Libby Trickett and Therese Alshammar) so to win tonight was pretty cool.”

Emma McKeon’s win followed a commanding performance from 19-year-old brother David in the 1500m freestyle, having already picked up gold in the 400m free. The University student covered the 60 laps of the 25m pool in 14:56.90, winning by more than 15 seconds from Japan’s Yuma Kosaka.

“The race stung a bit, but dipping under the 15 minute mark made it all worthwhile,” said David McKeon.  “Emma did all right too.”

Emma then finished the night with bronze in the 50m butterfly as Libby Trickett also rounded out her meet with another fifth place finish in the same event.  McKeon hit the wall in 26.15 with Therese Alshammar taking gold in 25.01 while Trickett finished in 26.88 and Jessicah Schipper was sixth in 27.09.

Cameron McEvoy, 17, scored an upset win in the 100m freestyle final, slashing more than a second off his personal best to beat home a field including fellow Australians Matt Abood, Kyle Richardson and Andrew Lauterstein. McEvoy also won silver in the 200m freestyle.

The Gold Coast swimmer claimed the junior world 50m and 100m freestyle titles earlier this year and made headlines by breaking Thorpe's long-standing 100m freestyle record at April's Australian Age Championships in Adelaide.

McEvoy said he took huge inspiration from watching Magnussen, Abood, Matt Targett and Eamon Sullivan score a stunning relay win at July world titles in Shanghai.

"I stayed up and streamed it live on the computer and I got the whole family around and we all watched it and cheered and it was really motivating," he said.

"I went to training the next day and everyone was talking about it."

McEvoy was too young to remember Thorpe helping Australia to a famous relay win at the 2000 Olympics but has "seen it countless times on YouTube."

And after his first camp alongside the returning Olympic great, McEvoy's motivation levels are peaking.

"This brings good confidence for what's coming up later on. It makes me want to go home and train a lot more," he said.

"I'm going to go on looking to do the best time I possibly can and if that gets me on the team that would be a really good bonus."

AOC with Swimming Australia & AAP