Newcastle pair Thomas Fraser-Holmes and Meg Bailey fell short of automatic qualification times at Australia's World Championships trials in Brisbane on Wednesday night but both collected silver medals.
Fraser-Holmes and Bailey finished second in their respective individual medley finals, men's 200m and women's 400m, with selection on the Dolphins team for those events now in the hands of national officials.
Continuing his comeback to competitive swimming after a 12-month ban for missed doping tests in 2017, 27-year-old Fraser Holmes stopped the clock at one minute and 58.76 seconds (1:58.76).
This was 0.95s outside the required mark (1:57.81) and well behind race winner Mitch Larkin (1:55.72), who comfortably broke his own Commonwealth record.
The Novocastrian, representing Griffith University, had splits of 25.62s for the butterfly leg, 29.95s for backstroke, 34.63s for breaststroke and 28.56s for freestyle.
Bailey led for over half of her longer eight-lap contest, but Perth 28-year-old Blair Evans came home stronger to clinch victory.
Racing under the Hunter banner, 22-year-old Bailey recorded a time of 4:41.61 while Evans touched the wall at 4:40.40. The qualifier was 4:37.14.
Bailey's program has now ended after also coming third in the women's 200m IM on Sunday. Fraser-Holmes, who was sixth in the men's 200m freestyle on Monday, has the 400m IM remaining on Friday.
Former Maitland schoolgirl Abbey Harkin has the women's 200m breaststroke on Thursday.
Meanwhile, Larkin, Ariarne Titmus and Emily Seebohm are the latest Australian stars to be snapped up for the International Swimming League which launches in October.
Four of the league's eight teams were announced on Tuesday with Larkin and Titmus confirmed for the Cali Condors, and Seebohm joining the Paris-based Energy Standard team.