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just four teams
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Official Tampa Bay Rays Website
![News emerges MLB used 2 types of baseballs in 2021 as labor deadline passes : NPR](https://theanalyst.com/wp-content/uploads/2023/10/overallrawvalue-1024x1024.png)
just four teams
![News emerges MLB used 2 types of baseballs in 2021 as labor deadline passes : NPR](https://i.kinja-img.com/gawker-media/image/upload/c_fit,f_auto,g_center,q_60,w_645/2c6f021cf353004ca5ea6a960d3409b1.jpg)
MLB secretly used two different types of baseballs last season
![News emerges MLB used 2 types of baseballs in 2021 as labor deadline passes : NPR](https://a57.foxnews.com/static.foxnews.com/foxnews.com/content/uploads/2022/12/1200/675/mlb-baseballs.jpg?ve=1&tl=1)
Study claims MLB used three different baseballs in 2022 after its
![News emerges MLB used 2 types of baseballs in 2021 as labor deadline passes : NPR](https://theanalyst.com/wp-content/uploads/2023/03/mlb-all-time-home-runs-1024x576.png)
just four teams
![News emerges MLB used 2 types of baseballs in 2021 as labor deadline passes : NPR](https://img.mlbstatic.com/mlb-images/image/private/t_16x9/t_w1024/mlb/uos4mdzbxxg9selq2vjn)
2020 World Series Urgency Index
![News emerges MLB used 2 types of baseballs in 2021 as labor deadline passes : NPR](https://media.bleacherreport.com/image/upload/w_300,h_200,c_fill/v1645486011/o5rvt0qtdth2nisstzbv.jpg)
MLB Confirms It Used 2 Sets of Baseballs with Differing Weights
![News emerges MLB used 2 types of baseballs in 2021 as labor deadline passes : NPR](https://cdn.vox-cdn.com/thumbor/-lERkT8cuALsZ_sDORFfMN7g88k=/0x0:5568x3712/1400x933/filters:focal(2339x1411:3229x2301):no_upscale()/cdn.vox-cdn.com/uploads/chorus_image/image/59842895/667367834.jpg.0.jpg)
Study confirms MLB's baseballs are different, contributing to home
![News emerges MLB used 2 types of baseballs in 2021 as labor deadline passes : NPR](https://imgv2-1-f.scribdassets.com/img/word_document/629756937/original/8e7d496b02/1697475006?v=1)
A Pitcher's Moment: Carl Hubbell and the Quest for Baseball
![News emerges MLB used 2 types of baseballs in 2021 as labor deadline passes : NPR](https://library.sportingnews.com/2021-08/tatis-ohtani-lindor-getty-ftrjpeg_17davdgkstkak1y1mlmz85b12n.jpeg)
21 things I really want to see during the 2021 MLB season
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MLB trade deadline: Five under-the-radar additions who could make