Hazard joined Chelsea from French Ligue 1 side Lille during the 2012 summer transfer window.
“After 16 years and more than 700 matches played, I have decided to end my career as a professional footballer.”
Manager Carlo Ancelotti said Hazard was suffering from gastroenteritis, while Bale picked up a knock last week on international duty with Wales.
The Barcelona superstar garnered 174 points in the ranking system deployed by IFFHS.
Hazard has been dogged with one misfortune or the other since his big money move to the Spanish capital.
