In 2010, a Chicago Bears fan fell out of the stadium and died. In the past 20 years, many fans fell out of upper decks at Baseball games; most were deadly. Also in 2010, a two year old fell out a sky box at a Lakers game and he died.
About 3.5 million people are hurt in various sports. The sports with the most injuries is Basketball with a half a million getting hurt. This is followed by bicycle accidents with head injuries resulting in death. Drowning while swimming and skiing accidents also are high in death data. The sources I used to get this information did not break down the exact number of deaths out of each sport, just the numbers hurt in each sport.
Alexander Hamilton got into a duel with Aaron Burr, and sustained fatal injuries that causes his death relatively soon after the duel ended.
John Harvard died from injuries sustained in a chess match with Elihu Yale.
go to wikipedia.com and type in Deaths due to injuries sustained in boxing
Shrewpaw died from injuries sustained after falling off a cliff during battle training with ShadowClan. He was not able to recover from his injuries and died shortly after the incident.
Aleksei Zavyalov died on September 30, 2011, in Moscow, Russia of injuries sustained in a skydiving accident.
Amaroq died from injuries sustained during a fight with other wolves. Julie found him wounded and nursed him as he passed away.
Marie Colvin died on February 22, 2012, in Homs, Syria of injuries sustained from combat shelling.
She died of severe injuries sustained from a fall. She died in Hastings, Sussex, England.
Frank Pastore died on December 17, 2012, from injuries sustained in a motorcycle accident.
She died in hospital from a heart attack due to a blood clot. The injuries were initially sustained during a car crash.
Patsy Schutter died on August 2, 1970, in Nogales, Sonora, Mexico of injuries sustained in a plane crash.
Ryan Mouritsen died on February 27, 2009, in Torrance, California, USA of injuries sustained in a plane crash.