Baseball fans return for 2021 MLB season: Every team's Opening Day plan for in-person attendance
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When the Fans Didn't Go Wild: The 2020 MLB Season as a Natural Experiment on Home Team Performance – Society for American Baseball Research
After a year of empty stands, the Orioles are welcoming crowds again. So far, fans aren't flocking back.
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MLB attendance 2021: 28 of 30 teams down as ballparks reopen