Jumbo-Visma rider forced to retire due to injury, aged 26 Cycling by el-admin - May 2, 2019 0751 Daan Olivier at the 2017 Vuelta a España (Photo: Yuzuru SUNADA) A Jumbo-Visma rider has been forced to retire at 26 years old because of an injury sustained in a crash last season. Share this: Dutch anti-doping boss says he’s ‘uncomfortable’ with use of ketones in Jumbo-VismaDateJanuary 29, 2020In relation toCyclingDaring to dream: How Jumbo Visma built their Tour challengeDateJuly 19, 2019In relation toCyclingTom Dumoulin’s departure from Sunweb ‘far from settled’DateJuly 30, 2019In relation toCycling