Why are Red Sox and Mariners players wearing green hats and green embroidery on uniforms?

Red Sox and Mariners players wear green hats and green embroidery on their uniforms to celebrate St. Patrick's Day, a tradition in Major League Baseball. This special attire is part of MLB's annual festivities honoring the Irish holiday, which often includes themed promotions and events. The green color symbolizes the celebration of Irish culture and heritage, creating a festive atmosphere during the games.