Borst finished school when he was 18, the so-called havo. Although he never played professional football, he became a journalist for the magazine Voetbal International in 1985. After working for Voetbal International for six years he started to write for another magazine, Panorama. He did that for three years only. He now writes columns for the Algemeen Dagblad (mostly about Football) as well for the magazine Esquire, about love and sex. He also is one of the main editors for the soccermagazine Hard Gras.
Borst also appeared on Dutch television. An avid Sparta Rotterdam supporter, he was a regular guest in the soccer discussion program Studio Voetbal as well as regular guest in the current affairs program De Wereld Draait Door. He also presented his own television program, Over Vaders en Zonen. In this show Borst examines issues of raising autistic children, a topic to which he was drawn due to his experiences with his own autistic son.
In 2011, Borst ceased all writing and television activities, claiming he was mentally exhausted.
During the 2014 World Cup Borst is appearing on Nederland 1’s “Studio Brasil” as a pundit.