My book has more details, but the first public reports of Ralph's problems were in late 1924 immediately after his father died. Ralph's messy divorce from his first wife was big news.
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Ralph had won several world championships by 1924, so he certainly could play sober. I think Mosconi's famous quote accurately describes the rest of Ralph's life:
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Link to the book:
wow, i didn't know the author of that book was a forum regular. i borrowed that book, a fascinating life story from vaudeville to world championships! thanks for your contribution to pool literature.