Kim took off more than six-tenths from his previous best time of 51.05, which stands as the Canadian NAG record in the 13-14 age group.
The 14-year-old Kryger dipped under her personal best set in early July to leapfrog Jade Hannah for #2 all-time in the 13-14 age group behind Taylor Ruck.
Canadian star Josh Liendo headlined the list of competitors during prelims on Sunday morning, taking the top seed in the 100-meter freestyle with a 49.85.
The final prelims session at the 2023 Mel Zajac Jr. International Swim Meet wrapped up with some strong swims out of the UBC Aquatic Center.
20-year-old Canadian Josh Liendo took the top seed in both the 200 free (1:50.59) and 50 fly (24.15) during prelims on Friday morning in Vancouver.
Wilm put up a time of 1:01.03 in the prelims, leading a women’s 100 back field that features three others with best times sub-1:00.5.
Clark produced a time of 1:00.18, dropping her previous best by nearly a second while moving into #2 all-time in the Canadian 13-14 age group rankings.