Expósito competed at 2000 Summer Paralympics for Spain in the javelin and shot put. He did not finish in the top three in those events. He finished first in the 100 meters and the long jump. He could not compete in the 2004 Summer Paralympics and 2008 Summer Paralympics because cheating at the 2000 Games which included people with intellectual disabilities resulted in people with intellectual disabilities not being allowed to compete in those years. People with intellectual disabilities were allow to compete at the 2012 Summer Paralympics. Expósito finished first in the F20 Long Jump event at the 2012 Summer Paralympics.