On July 22, 2007, Coolbaugh was killed during the ninth inning of a game against the
Arkansas Travelers in
North Little Rock, Arkansas, when a
line drive hit by Drillers catcher Tino Sanchez struck him in the neck while he was standing in the first base coach's box. The impact ruptured Coolbaugh's left
vertebral artery, which supplies significant parts of the brain with blood. The result, according to
Pulaski County coroner Mark Malcolm, was a severe
brain hemorrhage. Travelers general manager Pete Laven was among the first to reach Coolbaugh after he collapsed, along with Travelers team doctor James Bryan, team athletic trainer Brian Reinker and Gene France, a local doctor who was sitting near the first base dugout with his daughter and a family friend, both of whom are also physicians. France watched as Bryan administered
pain stimulus, applying pressure to various areas of Coolbaugh's body, all with no response.
Cardiopulmonary resuscitation was administered to Coolbaugh on the field where he remained breathing until the ambulance reached the hospital. Coolbaugh was pronounced dead at 9:47 p.m.
CDT (0247
UTC, July 23), less than an hour after being struck with the line drive. The game, which the Travelers had been leading 7–3, was
suspended. The next day,
Texas League president Tom Kayser declared the game to be a complete game. Additionally, the Drillers and Travelers both chose to postpone the game scheduled for the following night. Rockies general manager
Dan O'Dowd said, "when I heard about what the players did, I almost cried." As the Rockies made it to the
World Series, her share ended up being $233,505.18. On November 8, 2007, MLB general managers decided that all base coaches would wear
helmets starting with the upcoming 2008 season. Coolbaugh's life and death are the subject of a book by S. L. Price, titled
Heart of the Game: Life, Death, and Mercy in Minor League America. ==Legacy==