MLB to require players, staff to wear electronic tracers as part of protocols in 2021 - The Boston Globe
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MLB's 2021 protocols include shortened spring training games, in-game video for players - Bleed Cubbie Blue
2021 MLB season preview -- Power rankings, best (and worst) case and most exciting player for all 30 teams - ESPN
Two years after MLB debut, Rangers' Jake Latz returns to Cleveland in new role
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2021 MLB season: Government health officials recommend delay - Sports Illustrated
Spring Training MLB Prospect Report—March 23, 2021 — College Baseball, MLB Draft, Prospects - Baseball America
Five Former Bells to Participate in 2021 MLB Spring Training
Arizona Leaders Ask for Spring Training Delay - The New York Times
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