He said his body ached, his legs hurt and he felt tired, but Michael Phelps still went out of the Olympics in spectacular style with four golds and a silver in a week -- 22 golds in a five-Olympics career -- and still one more title likely on Saturday. The Chinese medicinal practice of 'cupping' which left red circle marks on his body was the only apparent sign that at 31, Phelps is slowing down, and then barely. His victories in the 4x100m free and 4x200m free relays, 200m butterfly and 200m individual medley were all clear. The man who won eight golds at Beijing in 2008 has always come across as something of a medal machine. But Phelps has also shown his more mature side in Rio. Being in a three-way dead heat for silver in the 100m on Friday was "kind of cool".