Former Phillies All-Star Ryan Howard announces retirement from baseball at age 38

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Former Phillie Ryan Howard announces retirement - ESPN

Former Phillies All-Star Ryan Howard Retires From Baseball

Former Phillies' 1B Ryan Howard Announces Retirement - CBS Philadelphia

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In retirement speech, Ryan Howard urges fans to not boo struggling Phillies

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Former Philadelphia Phillies star Ryan Howard officially retires with 'Thank You, Philly' letter - 6abc Philadelphia