![Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie Robinson day across the MLB - masslive.com Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie Robinson day across the MLB - masslive.com](https://arc-anglerfish-arc2-prod-advancelocal.s3.amazonaws.com/public/MVEXC5N62JHDZOU3ARNO6JGKTI.jpg)
Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie Robinson day across the MLB - masslive.com
![Nick Madrigal Game-Used Jackie Robinson Day '42' Jersey - Cubs at Dodgers - 4/15/23 - Size 40C | Chicago Cubs Auctions Nick Madrigal Game-Used Jackie Robinson Day '42' Jersey - Cubs at Dodgers - 4/15/23 - Size 40C | Chicago Cubs Auctions](https://vafloc02.s3.amazonaws.com/isyn/images/f193/img-3859193-m.jpg)
Nick Madrigal Game-Used Jackie Robinson Day '42' Jersey - Cubs at Dodgers - 4/15/23 - Size 40C | Chicago Cubs Auctions
![Official MLB Jackie Robinson #42 Collection, MLB Jackie Robinson Commemorative Jerseys, Tees, Gear | MLBshop.com Official MLB Jackie Robinson #42 Collection, MLB Jackie Robinson Commemorative Jerseys, Tees, Gear | MLBshop.com](https://fanatics.frgimages.com/mens-mitchell-and-ness-jackie-robinson-gray-brooklyn-dodgers-cooperstown-collection-authentic-jersey_pi4671000_ff_4671796-b6d5a78a9af5707fac24_full.jpg?_hv=2&w=600)
Official MLB Jackie Robinson #42 Collection, MLB Jackie Robinson Commemorative Jerseys, Tees, Gear | MLBshop.com
![Official MLB Jackie Robinson #42 Collection, MLB Jackie Robinson Commemorative Jerseys, Tees, Gear | MLBshop.com Official MLB Jackie Robinson #42 Collection, MLB Jackie Robinson Commemorative Jerseys, Tees, Gear | MLBshop.com](https://fanatics.frgimages.com/mens-nike-jackie-robinson-white-brooklyn-dodgers-home-cooperstown-collection-player-jersey_pi3599000_ff_3599449-bcfce199127e2bc9ab72_full.jpg?_hv=2&w=600)
Official MLB Jackie Robinson #42 Collection, MLB Jackie Robinson Commemorative Jerseys, Tees, Gear | MLBshop.com
![Amazon.com: Dabuliu Men's Black Legend 42 Retro Baseball Jersey Embroidered Patches Sewn Hipster Hip Hop Shirts(S, Light Blue) : Sports & Outdoors Amazon.com: Dabuliu Men's Black Legend 42 Retro Baseball Jersey Embroidered Patches Sewn Hipster Hip Hop Shirts(S, Light Blue) : Sports & Outdoors](https://m.media-amazon.com/images/I/61gAiRHRLcL._AC_UY1000_.jpg)
Amazon.com: Dabuliu Men's Black Legend 42 Retro Baseball Jersey Embroidered Patches Sewn Hipster Hip Hop Shirts(S, Light Blue) : Sports & Outdoors
![Amazon.com: Jackie Robinson Brooklyn Dodgers #42 Blue Youth 8-20 Cooperstown Name and Number Player T-Shirt (8) : Sports & Outdoors Amazon.com: Jackie Robinson Brooklyn Dodgers #42 Blue Youth 8-20 Cooperstown Name and Number Player T-Shirt (8) : Sports & Outdoors](https://m.media-amazon.com/images/I/71yLoK2sGWL._AC_SL1500_.jpg)