![Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie](https://securea.mlb.com/assets/images/9/2/0/118543920/cuts/girffey42_1280_zhc371g7_bv7j8wum.jpg)
No. 42 jersey tribute began in 2007 with Griffey
![Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie](https://x-default-stgec.uplynk.com/ausw/slices/ffe/1fc9d2805b3e4e6c81b38049210ea338/ffe7a222aee44dd283650ffd0b5f5359/poster_38f5a16a57b3494db2684953fb5b8ce9.jpg)
MLB players to wear #42 Monday to honor Jackie Robinson Day
![Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie](https://www.uticaod.com/gcdn/-mm-/607cf9e5b9ef865560771ce0856dae0de54e7c0a/c=0-284-5398-3320/local/-/media/2020/08/28/Utica/ghows-NY-200829633-29b41229.jpg)
MLB celebrates timely Jackie Robinson Day
![Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie](https://ewscripps.brightspotcdn.com/dims4/default/8de12e1/2147483647/strip/true/crop/1000x563+0+0/resize/1280x720!/quality/90/?url=https%3A%2F%2Fewscripps.brightspotcdn.com%2F26%2F7f%2F002f5a074ee788763bd7c7e9a7f0%2Fap21105449974625.jpg)
Why every MLB player is wearing No. 42 today
![Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie](https://www.news-herald.com/wp-content/uploads/2022/04/AP22106030317655.jpg?w=1024)
Majors celebrate 75th anniversary of Jackie Robinson's debut
![Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie](https://www.si.edu/sites/default/files/newsdesk/press_releases/jackie_robinson_jersey_photo.jpg)
National Museum of African American History and Culture Displays
![Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie](https://images2.minutemediacdn.com/image/upload/c_fill,w_1440,ar_16:9,f_auto,q_auto,g_auto/shape/cover/sport/https-3A-2F-2Fdistrictondeck-com-2Fwp-content-2Fuploads-2Fgetty-images-2F2018-2F04-2F80839832-new-york-mets-v-washington-nationals-jpg-850x560-0273394ea9b3475b4607268ed7ea93d3.jpg)
Washington Nationals celebrate Jackie Robinson Day
![Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie](https://media.cnn.com/api/v1/images/stellar/prod/130415140654-04-robinson-day.jpg?q=w_1280,h_720,x_0,y_0,c_fill/h_778)
Photos: MLB celebrates Jackie Robinson
![Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie](https://www.ocregister.com/wp-content/uploads/2020/08/Mariners-Angels-Baseball-1.jpg?w=525)
Angels and Mariners lock arms in show of support on Jackie
![Why are Boston Red Sox players all wearing No. 42 jerseys? Jackie](https://library.sportingnews.com/styles/crop_style_16_9_mobile_2x/s3/2021-08/jackie-robinson-day_1a0ajhae6ezz0103keafz8qezm.jpg?itok=fNHGn7h9)
Jackie Robinson Day 2023: The eternal impact of No. 42