The 35-year-old joins the Australian outfit from Lampre-Merida, for whom he won stages at the Tour de France and Vuelta a Espana in 2015.
Ruben Plaza wins stage 20, while Fabio Aru delivers a brilliant attack in Vuelta's final mountain stage to reclaim overall lead for good.
Chris Froome defends the yellow jersey on a treacherous descent while Sky teammate Geraint Thomas survives frightening crash.
Ten days after his horrific crash at the Vuelta a Murcia, Spanish rider Rubén Plaza underwent a five-hour surgery Tuesday at a Barcelona
Rubén Plaza – one of the numerous “refugees” from the Operación Puerto doping scandal -- has landed a contract with Caisse