On April 1, 2022, Major League Baseball announced its teams would be permitted to wear advertisements on their in-game uniforms starting with Opening Day in 2023. As of July 31, 2024, twenty-two (73%) of the thirty MLB teams have advertisements on their uniforms.

These ad patches can only be worn on jersey sleeves. They are limited to one patch per jersey and a maximum of 4″ x 4″ in size. Teams can only have one consistent ad patch per season, and their patch must have the same overall design across all of the team’s uniforms. All patch designs will be reviewed and approved by both the league and the player’s union. Patches advertising alcohol, gambling, or media brands will not be permitted.

Active MLB Jersey Ads by Team

TEAM	PATCH	FIRST WORN
Arizona Diamondbacks	Avnet	March 30, 2023
Atlanta Braves	Quikrete	May 19, 2023
Baltimore Orioles	T. Rowe Price	June 11, 2024
Boston Red Sox	Mass Mutual	March 30, 2023
Chicago Cubs	NONE	N/A
Chicago White Sox	NONE	N/A
Cincinnati Reds	Kroger	March 30, 2023
Cleveland Guardians	Marathon	July 21, 2023
Colorado Rockies	NONE	N/A
Detroit Tigers	Meijer	May 25, 2023
Houston Astros	Oxy	March 30, 2023
Kansas City Royals	QuikTrip	March 28, 2024
Los Angeles Angels	Foundation Building Materials	March 30, 2023
Los Angeles Dodgers	Guggenheim	March 20, 2024
Miami Marlins	ADT	March 30, 2023
Milwaukee Brewers	Northwestern Mutual	September 15, 2023
Minnesota Twins	NONE	N/A
New York Mets	New York-Presbyterian	v1: April 10, 2023 v2: April 26, 2023
New York Yankees	Starr Insurance	July 21, 2023
Oakland Athletics	NONE	N/A
Philadelphia Phillies	Independence Blue Cross	July 31, 2024
Pittsburgh Pirates	Sheetz	June 21, 2024
San Diego Padres	Motorola	March 30, 2023
San Francisco Giants	Chevrolet	March 28, 2024
Seattle Mariners	NONE	N/A
St. Louis Cardinals	Stifel	May 2, 2023
Tampa Bay Rays	NONE	N/A
Texas Rangers	Energy Transfer	March 28, 2023
Toronto Blue Jays	TD Bank	July 14, 2023
Washington Nationals	NONE	N/A

The first MLB team to announce a deal to wear an ad on their uniform was the San Diego Padres, who made their partnership with Motorola official on April 19, 2022, two weeks after MLB permitted uniform advertising. The first team to actually wear an advertisement as part of this new system was the Boston Red Sox, who had an earlier start time on Opening Day 2023 and, therefore, were able to get their MassMutual patch out on the field first. The first on-uniform ad worn during an MLB game was by both the Chicago Cubs and New York Mets, who wore ads on their jerseys during their Opening Series in Japan on March 29-30, 2000.

The New York Mets changed the design of their original ad patch after only two weeks following complaints about its appearance from fans and the media. The San Francisco Giants swapped their jersey ad from Cruise to Chevrolet following the 2023 season after the Cruise company suspended operations in late 2023.