He later received a four - year ban .
After a very successful opening to his 2011 season , which saw him take victories in Argentina , Chile and the Dominican Republic , Arriagada tested positive for the anabolic steroid stanozolol during the Vuelta de Chile .
Arriagada later received a four - year ban .
After a very successful opening to his 2011 season , which saw him take victories in Argentina , Chile and the Dominican Republic , Arriagada tested positive for the anabolic steroid stanozolol during the Vuelta de Chile .