Melbourne teenage siblings Jack and Angela Yu are thriving in the mixed doubles, just not with each other.
Jack Yu, 17, and 19-year-old partner Kaitlyn Ea beat Jamaica's Samuel Ricketts and Tahlia Richardson 21-13 16-21 21-8 to reach the Commonwealth Games round of 16.
Yu's older sister Angela then teamed up with Tran Hoang Pham to thrash the Falkland Islands' Joshua Dwight and March Soraye 21-2 21-5.
The Yus won't meet unless they both make the final.
Gronya Somerville and Lin Ying Xiang also made it through, beating Uganda's Mohamed Rafi and Brian Kasirye 21-10 21-6.
In the men's doubles, Yu and Tran Hoang Pham beat the Falkland Islands' Douglas Clark and Duane March in straight sets 21-5 21-7 to reach the last 16.
In the women's singles, Hsuan-Yu Wendy Chen thrashed Lorna Bodha 21-3 21-6 to cruise into the round of 16.
But Tiffany Ho was knocked out in straight sets by Scotland's Kirsty Gilmour 21-6 21-14.
In the men's singles, Lin Ying Xiang beat Narayan Tolamani Ramdhani 2-0 in his singles round of 32, but Nathan Tang was knocked out by England's Toby Penty in straight sets.