https://sabr.org/wp-content/uploads/2020/03/research-collection4_350x300.jpg300350admin/wp-content/uploads/2020/02/sabr_logo.pngadmin2023-01-13 08:18:502023-01-13 08:18:50Derringer; Paul
https://sabr.org/wp-content/uploads/2020/03/research-collection4_350x300.jpg300350admin/wp-content/uploads/2020/02/sabr_logo.pngadmin2023-01-13 08:18:502023-01-13 08:18:50Demaree; Al
https://sabr.org/wp-content/uploads/2020/03/research-collection4_350x300.jpg300350admin/wp-content/uploads/2020/02/sabr_logo.pngadmin2023-01-13 08:18:502023-01-13 08:18:50Demeter; Don
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https://sabr.org/wp-content/uploads/2020/03/research-collection4_350x300.jpg300350ruckervolunteer1/wp-content/uploads/2020/02/sabr_logo.pngruckervolunteer12023-01-13 08:18:502023-08-19 13:19:27Bill McKechnie and Paul Derringer Test Pitching Machine
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admin2023-01-13 08:18:502023-01-13 08:18:50Derringer; Paul