Jonathan Martinetti Mawyin of Ecuador captured the gold while Andres Ducasse Soruco of Chile was third.
In the mixed lightning competition, Argentina won gold while the United States finished second and Brazil captured bronze.
Canada finished first in the final race of the day but finished last in the overall standings.
Note to readers: This is a corrected story. An earlier version reported that Canada won gold in the mixed lightning event. In fact, Canada won the final race in the series but finished last in the overall medal standings.