What happened: The U.S. Patent and Trademark Office has denied Major League Baseball's application to trademark the phrase 'Play Ball.' The bid to claim exclusive commercial rights to the umpire's traditional call to start games was rejected.

Why it matters: The phrase is woven into baseball's culture and has been used freely across the sport for generations, from broadcasts to ballpark signage to youth leagues. A successful trademark could have limited how the words are used commercially, so the denial keeps one of the game's most recognizable expressions open for everyone.

What to watch: Watch for whether MLB amends and refiles a narrower application or appeals the office's decision.