Historical Footage Shows How Ridiculous Checked Swings Used to Be

Footage circulating online highlights how “checked swings” in baseball have shifted in interpretation over decades, especially compared with today’s standards. The controversy around the 2026 World Series is referenced, but the key point comes from clips posted from a fall classic 61 years ago. In the video, several motions that modern viewers would likely call full swings were apparently ruled checked swings at the time. The explanation is that MLB’s official rulebook does not provide a precise, measurable definition of what counts as a checked swing or how far a bat can move before it becomes a swing. Instead, umpires decide whether the pitch was “struck at,” with Rule 8.02(c) allowing an appeal to another official.