Waldrep (pictured, far right) took almost two seconds off her PR, while Sim moved to #11 in the U.S. 13-14 age group historical rankings.
14-year-old Levenia Sim finished sixth overall in the 100 back, while 13-year-old Claire Weinstein was seventh in the 500 free.
The sisters charged up the historical age group rankings with some standout swims at the 2020 SE Holiday Classic in Nashville.
Cavalier Aquatics teammates Thomas Heilman and Grey Davis both have four swims ranked in the top-25, while Levenia Sim is fourth overall in the 100 back.
Isaac Lee (Manchester Makos Swim Team) took the men’s 11-12 800 free, posting a new best time of 9:11.04.