Jakobs positive 04/04/1991 Positive test ID 726
Jakobs tested positive for an unnamed "fortifier" during the 1991 Driedaagse De Panne (date of last day of racing given). The occurrence of this positive was only published during the investigation into Wim Sanders six years later.
Teams and people
- Dutch Drugs Scandal - Part 6, Cyclingnews.com, 01/12/1997