What happened: The Seattle Mariners marked the United States’ 250th anniversary with a July 4 message. The wording echoed the opening of the Gettysburg Address while extending its historical timeline.

Why it matters: The commemoration connects the club’s Independence Day activities with the nationwide semiquincentennial. Seattle is also scheduled to play at home on the holiday.

What to watch: The Mariners’ July 4 home game will continue the club’s holiday observance.