Pete Rose appears at an autograph signing event last month in Las Vegas. Baseball Commissioner Rob Manfred rejected Rose's plea for reinstatement, citing Rose's continued gambling and evidence that he bet on games when he was playing for the Cincinnati Reds. Without reinstatement, Rose can't be elected to the Hall of Fame. John Locher/AP hide caption

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Roger Clemens in 2007, as he was throwing batting practice for the Houston Astros. Could he be back in an Astros' uniform next month? David J. Phillip/AP hide caption

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Former all-star baseball pitcher Roger Clemens leaves the U.S. District Court on Monday after the first day of his perjury and obstruction trial in Washington, D.C. Mark Wilson/Getty Images hide caption

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