![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
![Major League Baseball honored Jackie Robinson with players, coaches and umpires all wearing Robinson's uniform number, 42. Here, Boston Red Sox first baseman Kevin Youkilis, left, mans the bag along with Minnesota Major League Baseball honored Jackie Robinson with players, coaches and umpires all wearing Robinson's uniform number, 42. Here, Boston Red Sox first baseman Kevin Youkilis, left, mans the bag along with Minnesota](https://c8.alamy.com/comp/2F0K465/major-league-baseball-honored-jackie-robinson-with-players-coaches-and-umpires-all-wearing-robinsonaposs-uniform-number-42-here-boston-red-sox-first-baseman-kevin-youkilis-left-mans-the-bag-along-with-minnesota-twins-baserunner-michael-cuddyer-middle-and-first-base-coach-jerry-white-in-the-fourth-inning-at-target-field-in-minneapolis-minnesota-on-thursday-april-15-2010-the-twins-defeated-the-red-sox-8-0-photo-by-richard-sennottminneapolis-star-tribunemctsipa-usa-2F0K465.jpg)
Major League Baseball honored Jackie Robinson with players, coaches and umpires all wearing Robinson's uniform number, 42. Here, Boston Red Sox first baseman Kevin Youkilis, left, mans the bag along with Minnesota
![Número 42 - Jersey número de Jackie Robinson - el único número a ser retirado a través de todos los MLB, en Boston Red Sox entrenamiento Facility, Ft Myers, Florida Fotografía de stock - Alamy Número 42 - Jersey número de Jackie Robinson - el único número a ser retirado a través de todos los MLB, en Boston Red Sox entrenamiento Facility, Ft Myers, Florida Fotografía de stock - Alamy](https://c8.alamy.com/zoomses/9/99c68b87514049e08712d0aee57c3473/2b0k9ee.jpg)
Número 42 - Jersey número de Jackie Robinson - el único número a ser retirado a través de todos los MLB, en Boston Red Sox entrenamiento Facility, Ft Myers, Florida Fotografía de stock - Alamy
![New York Yankees J.A. Happ Fanatics Authentic Game-Used #42 White Jackie Robinson Day Jersey and Cap vs. Boston Red Sox on April 16, 2019 - Size 46 - Size 7 1/4 -JD640287 & JB839516 New York Yankees J.A. Happ Fanatics Authentic Game-Used #42 White Jackie Robinson Day Jersey and Cap vs. Boston Red Sox on April 16, 2019 - Size 46 - Size 7 1/4 -JD640287 & JB839516](https://fanatics.frgimages.com/new-york-yankees/ja-happ-new-york-yankees-game-used-number-42-white-jackie-robinson-day-jersey-and-cap-vs-boston-red-sox-on-april-16-2019-size-46-size-7-1/4-jd640287-and-jb839516_pi3935000_altimages_ff_3935795-3381069e61ade721b980alt1_full.jpg?_hv=2&w=900)
New York Yankees J.A. Happ Fanatics Authentic Game-Used #42 White Jackie Robinson Day Jersey and Cap vs. Boston Red Sox on April 16, 2019 - Size 46 - Size 7 1/4 -JD640287 & JB839516
![Red Sox Foundation Game-Used and Autographed Jackie Robinson Day Jersey - Matt Strahm | Red Sox Auctions Red Sox Foundation Game-Used and Autographed Jackie Robinson Day Jersey - Matt Strahm | Red Sox Auctions](https://vafloc02.s3.amazonaws.com/isyn/images/f249/img-3726249-m.jpg)
Red Sox Foundation Game-Used and Autographed Jackie Robinson Day Jersey - Matt Strahm | Red Sox Auctions
![New York Yankees Luis Cessa Fanatics Authentic Game-Used #42 White Jackie Robinson Day Jersey and Cap vs. Boston Red Sox on April 16, 2019 - Size 46 - Size 7 1/8 -JD640279 & JB839522 New York Yankees Luis Cessa Fanatics Authentic Game-Used #42 White Jackie Robinson Day Jersey and Cap vs. Boston Red Sox on April 16, 2019 - Size 46 - Size 7 1/8 -JD640279 & JB839522](https://fanatics.frgimages.com/new-york-yankees/luis-cessa-new-york-yankees-game-used-number-42-white-jackie-robinson-day-jersey-and-cap-vs-boston-red-sox-on-april-16-2019-size-46-size-7-1/8-jd640279-and-jb839522_pi3935000_altimages_ff_3935793-5ff432ac91fc65023845alt1_full.jpg?_hv=2&w=900)
New York Yankees Luis Cessa Fanatics Authentic Game-Used #42 White Jackie Robinson Day Jersey and Cap vs. Boston Red Sox on April 16, 2019 - Size 46 - Size 7 1/8 -JD640279 & JB839522
![Red Sox on Twitter: "Jonny Gomes with a special jersey today. #SoxAlum https://t.co/hIca4YhCZJ" / Twitter Red Sox on Twitter: "Jonny Gomes with a special jersey today. #SoxAlum https://t.co/hIca4YhCZJ" / Twitter](https://pbs.twimg.com/media/DePNzKGUQAMB9j5.jpg:large)