Four years later he was competing in the 1928 Summer Olympics held in Amsterdam, Netherlands, he entered four events this time, in the 400 metres freestyle he won both his heat and semi-final, and then in the final he swam a time of 5:01.6 winning the gold medal and breaking the Olympic record which Johnny Weissmuller had set at the previous Olympics, thus also becoming South America's first Olympic swimming gold medalist. He also reached the finals in the 100 metres freestyle where he finished seventh, and the 1500 metres freestyle where he finished fifth, in his final event the 4 x 200 metre freestyle relay they finished last in there heat so didn't qualify for the final.