![A detailed view of the special MLB Debut patch worn on the jersey](https://staticg.sportskeeda.com/editor/2023/09/5c4b0-16948230355008-1920.jpg)
Why are MLB players wearing 21? Tributes around the league for Pirates legend explained
![A detailed view of the special MLB Debut patch worn on the jersey](https://www.sportspromedia.com/wp-content/uploads/2022/07/Red-Sox-1.jpg)
Boston Red Sox bag US$170m MassMutual jersey patch deal, says report - SportsPro
![A detailed view of the special MLB Debut patch worn on the jersey](https://img.mlbstatic.com/mlb-images/image/upload/t_16x9/t_w1024/mlb/y4oyp6x6cp0nrjcxutoy.jpg)
Release: Twins unveil new uniforms 11/18/22
![A detailed view of the special MLB Debut patch worn on the jersey](https://www.hailstateunis.com/uploads/5/4/8/8/54881987/693818762_orig.png)
Mississippi State Baseball Uniform History - Hail State Unis
![A detailed view of the special MLB Debut patch worn on the jersey](https://www.azcentral.com/gcdn/presto/2021/06/19/PPHX/57296a6c-ff12-4594-9e90-0e43684e06a5-USATSI_16276159.jpg)
Arizona Diamondbacks debut new earth-tone 'Serpientes' uniforms
![A detailed view of the special MLB Debut patch worn on the jersey](https://farm8.staticflickr.com/7188/14020972374_25c769ba0d_o.png)
Uni Watch - MLB firsts and lasts - ESPN
![A detailed view of the special MLB Debut patch worn on the jersey](https://img.bleacherreport.net/img/slides/photos/004/389/563/2bf763f3609dd98ac5804fbe0ceb0ef1_crop_exact.jpg?w=2975&h=2048&q=85)
The Coolest Throwback Jersey to Own for Each MLB Team, News, Scores, Highlights, Stats, and Rumors
![A detailed view of the special MLB Debut patch worn on the jersey](https://content.sportslogos.net/news/2019/02/mlb-150-logo-on-jersey-patch.jpg)
MLB 150: All 30 MLB Teams to Wear Jersey Patch in 2019 – SportsLogos.Net News
![A detailed view of the special MLB Debut patch worn on the jersey](https://img.mlbstatic.com/mlb-images/image/private/t_2x1/t_w1536/mlb/q08mq11kquwqojiepelt.jpg)
Yankees Museum Babe Ruth artifacts
![A detailed view of the special MLB Debut patch worn on the jersey](https://www.hailstateunis.com/uploads/5/4/8/8/54881987/185529360_orig.png)
Mississippi State Baseball Uniform History - Hail State Unis
![A detailed view of the special MLB Debut patch worn on the jersey](https://ca-times.brightspotcdn.com/dims4/default/c560485/2147483647/strip/false/crop/5568x3712+0+0/resize/1486x991!/quality/75/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2Fe2%2F63%2F30eb46224254943552125a92f9d9%2F20220412-mt-motorolajersey-0066.JPG)
Motorola patches to land on Padres jerseys in 2023 - The San Diego Union-Tribune
![A detailed view of the special MLB Debut patch worn on the jersey](https://media.nbcconnecticut.com/2022/07/web-220719-padres-jersey-side.jpg?quality=85&strip=all&fit=1280%2C720)
MLB Moving Ahead With Uniform Advertisements for 2023 Season – NBC Connecticut