The Boston Red Sox wear yellow jerseys as part of their Nike City Connect alternate uniforms, which honor the Boston Marathon. The yellow and blue color scheme is inspired by the marathon's branding, symbolizing Boston's boldness, resilience, and unity, especially following the 2013 Marathon bombing. These jerseys feature "BOSTON" in stencil font across the chest, a "617" area code racing bib patch on the sleeve, and yellow socks with light blue and white stripes. They are worn especially around Patriots Day, the day of the Boston Marathon, and have become popular due to the team's strong winning record when wearing them. Since 2024, the yellow City Connect jerseys have been a core part of the Red Sox's uniform rotation, often worn during Saturday home games and have replaced the blue alternate road uniforms in the team's core set starting in 2025.
