Former Phillie Ryan Howard announces retirement - ESPN

Philadelphia Inquirer - Philadelphia Phillies great Ryan Howard has decided to call it a career. The former rookie of the year and MVP thanked Philly in a piece for The Players' Tribune

Nolan Ryan - Wikipedia

Ryan Howard Praises Phillies Fans in Retirement Announcement

Ryan Zimmerman - Wikipedia

It's time for Philadelphia Phillies to release Ryan Howard - ESPN - SweetSpot- ESPN

Phillies great Ryan Howard officially announces retirement – The Mercury

Phillies great Ryan Howard officially announces retirement – The Mercury

Phillies Will Honor Retirements of Utley, Howard, and Rollins

Bryce Harper - Wikipedia

MLB announces Manny Ramirez is retiring after drug issue - ESPN