Palo Alto Stanford Aquatics (PASA) 14-year-old Kelsey Zhang entered the top-10 national age group (NAG) rankings with her 1:56.56 in the 200-yard butterfly.
Osio, not even ranked in the top 100 in the 13-14 age group coming into the meet, blasted his way through the 50-second barrier in 49.27 to take over 17th.