Former Red Sox 3B Adrian Beltre retires after 21 seasons – Boston
Adrian Beltre announces retirement
Adrian Beltre Announces Retirement After 21 Seasons In MLB
Adrian Beltre stays with Rangers at trade deadline, still could move
Reactions: Adrian Beltre announces MLB retirement
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Rangers' Beltre retires after 21 MLB seasons
Adrian Beltre, 21-year MLB veteran, announces retirement