Astros' Singleton ponders what career could have been if minor league marijuana testing ended sooner - North Shore News
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Failed marijuana tests nearly ended Jon Singleton's career. Now the Astros slugger is asking what if – NewsNation
Jon Singleton (baseball) - Wikipedia
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Failed marijuana tests nearly ended Jon Singleton's career. Now the Astros slugger is asking what if
Whitehorse Trail portion rebuilt after deadly mudslide, News
Jon Singleton eyes second chance at Brewers Minors camp
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Astros part ways with Jon Singleton