HOUSTON (AP) — The Astros have released former top prospect Jon Singleton, who was serving a 100-game suspension under baseball’s minor league drug program after a third positive test for a drug of abuse.
The 26-year-old first baseman played 114 games for Houston in 2014-15, hitting .171 with 14 home runs. Singleton spent all of last season with Double-A Corpus Christi, where he batted .205 with 18…
