North takes 13th place on Tuesday
The senior Perez, who will swim at St. Louis University next season, improved her 500-yard freestyle record by finishing in 5 minutes 15.03 seconds, good for ninth place.
Renzelmann, a sophomore, was seeded 10th in the 200 free but took fifth thanks to her time of 1:56.24.
The pair helped the Golden Raiders to a 13th-place showing in the 31-team meet.
They were also on the eighth-place 200 free relay, along with sophomore Libby Cleveland and senior Gigi Gotzmer, that came in eighth in 1:40.09.
Renzelmann, Cleveland, Gotzmer and sophomore Katie Spence placed 12th in the 200 medley relay in 1:52.19.
Because of the move to spring, North only had Fox River Classic Conference duals and took second place with a 6-1 mark. The league did not hold a championship meet.
