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He later lived in San Francisco with his brother and worked as a janitor Local #9 San Francisco at Bay Meadows and Golden Gate Fields from the 1960s through the 1970s.
Wrona has previously called races at Hollywood Park Racetrack in southern California; Bay Meadows in northern California; Arlington Park in Illinois; the New Orleans Fair Grounds in Louisiana; Turf Paradise Racecourse in Phoenix, Arizona; and Lone Star Park and Retama Park in Texas.
The Bay Meadows Derby was an American Thoroughbred horse race for three-year-old horses of either gender on the Longden Turf Course at Bay Meadows Racetrack.
Nearly seven years later, on December 1, 2006, Wrona was the announcer for the race at Bay Meadows in which Russell Baze passed Pincay for the same honors.