Retired Cub broadcaster Jack Brickhouse, who saw this home run [hit by Dave Kingman on May 17, 1979], revealed that the ball was greatly helped by a strong wind of 35 miles per hour. Brickhouse estimated Kingman's blast in reality went about 500 feet. In fact, Brickhouse stated Kingman's drive was not the longest ball he had ever seen. A 500-foot blast by the late Roberto Clemente remains the hardest hit ball Brickhouse has seen which was unaided by the wind.