Under Armour (UA) and online sports retailer Fanatics reportedly scored a deal to make on-field jerseys for Major League Baseball, replacing Majestic Athletic. The jersey deal will start with the 2020 season, according to a Sports Business Journal report on Monday Opens a New Window. . The agreement would give Under Armour its first uniform deal with a major U.S. sports league. Under the deal, the Baltimore-based sportswear giant will make Under Armour-branded MLB jerseys for in-game use, while Fanatics snags the rights to other apparel. Hats, however, will continue to be made by New Era. An official announcement is expected to come following the World Series, the report said. Terms of the deal aren’t clear.