You don't see stuff like that in the big leagues. Adrián Beltré makes his retirement official - The Athletic
Adrián Beltré Day: The Wisdom to Leave at the Right Time - Baseball ProspectusBaseball Prospectus
Rangers' Adrian Beltre retires after 21 seasons, 3,166 hits, Taiwan News
Adrian Beltre Was a Hall-of-Famer Who Flew Under the Radar - InsideHook
Adrian Beltre retires: Rangers 3B done after 21 seasons - Sports Illustrated
Adrian Beltre 'completely happy' with retirement after 21 seasons - ESPN
Beltre 'completely happy' with retirement after 21 seasons
Adrian Beltre & Chuck Morgan to be Inducted into Rangers Baseball Hall of Fame August 14 - City of Arlington
Beltre inducted into Rangers Hall of Fame with PA man Morgan, Sports