CHOP Hyperoxaluria Treatment Keeps Peyton at the Plate sewardsk3 Sun, 07/19/2026 - 20:33 A softball catcher, Peyton was preparing for her summer travel softball season when she got sick. That illness would lead her to CHOP and a hyperoxaluria type 1 diagnosis. Peyton, a rising sophomore catcher, was prepping for the travel softball season – played during the summer – when sickness set in.