What happened: The Seattle Mariners marked the Fourth of July with a holiday greeting to fans, celebrating the 250th anniversary of American independence. The message added Seattle's voice to a league-wide wave of Independence Day salutes.

Why it matters: The semiquincentennial makes this a milestone Fourth of July across sports, with teams throughout baseball and beyond marking 250 years of American independence. July 4 baseball is one of the sport's oldest traditions, and the holiday slate is a signature date on the MLB calendar.

What to watch: The Mariners continue their 2026 regular-season schedule through the holiday weekend as the season moves past its midpoint.