Cleveland Indians: 5 secrets you might not know about Progressive Field

4. The Chapman plaque

The Indians pay homage to their history in center field’s Heritage Park, but the plaque of Ray Chapman is of particular historical significance.

Chapman is the only Major League to be killed during a game, Aug. 17, 1920.

The plaque was thought to be displayed where the Indians used to play, at League Park on Lexington Street, on the east side. The Indians started playing games at Municipal Stadium in 1932, and the plaque made the trip, as well.

Eventually, it went missing, and the theory is that it went into storage in in the 1970s, possibly in an equipment room. The plaque persevered, though, making the journey to Jacobs Field, where it was unearthed in 2007.

Team historian Jeremy Feador views the piece as more artifact, than plaque, via Cleveland.com.

"“Plaques are cool, but this one is directly tied to the Chapman incident…it’s a direct connection to lost balllparks that are no longer standing, to players no longer here.”"

This August marks the 100th anniversary of Chapman’s death. He’s buried in Lake View Cemetery, which sits three miles from the location of old League Park. You’ll recognize his grave, as fans tend to leave baseballs behind on Chapman’s headstone.