Clubs will be restricted to four distinct uniforms for the 2023 season

Alongside rule changes, baseball is undergoing MLB uniform changes as well. Last year, Nike, who does all MLB jerseys now, noticed that some teams had an overabundance of uniform options. — www.sportskeeda.com

The MLB and Nike have restricted the number of uniform choices that each MLB club can wear during the season. Prior to 2023, each team could have an uncapped supply of different uniforms and combinations they could dress in for games. Nike, who now produces all MLB uniforms, has requested teams have a selection of only four to choose from starting with the 2023 season.
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