Another one
http://www.cyclingweekly.com/news/latest-news/belgian-rider-jeroen-goeleven-dies-sleep-aged-25-376761
"Belgian cyclist Jeroen Goeleven, 25, died in his sleep last night from what initial reports suggest was natural causes, happening only two weeks after Michael Goolaerts suffered a heart attack in Paris-Roubaix.
Goeleven, born on July 4, 1992, raced with the continental team Colbra in 2015, but in recent years with smaller teams. Only 10 days ago, he won the Limburg time trial title."
Didn't hear about this one. So young.