 Wrona has called races at the Sonoma County Fairgrounds since 2009.He was hired as the voice of Santa Anita Park in March 2016, replacing Trevor Denman, and remained there until he was succeeded by Frank Mirahmadi following the 2018 Autumn meet.He has previously called races at Golden Gate Fields, and has also worked at Arlington Park, Fair Grounds, Turf Paradise, Lone Star Park, Retama Park, Del Mar, and the old Hollywood Park and Bay Meadows race tracks.