Sunday’s PTQ for the 2021 U.S. Open provided a great illustration of the difference between the bowling world before the COVID-19 pandemic and during the COVID-19 pandemic. In 2020, just 20 players advanced from the 64-player PTQ to complete the 108-player field for the U.S. Open at Sun Valley Lanes in Lincoln, Nebraska. This year, 43 players advanced from the 53-player PTQ to complete the 108-player field for the U.S. Open that starts Tuesday at the National Bowling Stadium in Reno....