The son of former NBA coach Rick Adelman -- who was an assistant NBA coach himself -- was killed in Houston when he was struck by a vehicle while crossing the street ... TMZ Sports has learned.
Officials confirm 44-year-old R.J. Adelman was walking around downtown Houston around noon on Feb. 2 when he was hit by an 80-year-old woman driving a Chrysler Town & Country minivan.
According to the police report, Adelman was not using a crosswalk at the time of the accident.
Adelman was transported to the hospital in serious condition and was pronounced dead 4 hours later.