Rio Olympics: Joseph Schooling gets hero's welcome back home after stunning Michael Phelps

Singapore's Joseph Schooling competes in a semifinal of the men's 100-meter butterfly during the swimming competitions of the 2016 Summer Olympics.

Singapore's Joseph Schooling checks his time in the men's 100-meter butterfly final during the swimming competitions at the 2016 Summer Olympics.

United States' Michael Phelps, left, congratulates Singapore's Joseph Schooling for his gold in the men's 100-meter butterfly final during the swimming competitions at the 2016 Summer Olympics

Singapore's Joseph Schooling celebrates after winning gold in the men's 100-meter butterfly final during the swimming competitions at the 2016 Summer Olympics.

United States' silver medal winner Michael Phelps, Hungary's silver medal winner Laszlo Cseh, Singapore's gold medal winner Joseph Schooling and South Africa's silver medal winner Chad Le Clos, from left, in the men's 100-meter butterfly medals ceremony during the swimming competitions at the 2016 Summer Olympics.

Singapore's Joseph Schooling shows off his gold medal in the men's 100-meter butterfly medals ceremony during the swimming competitions at the 2016 Summer Olympics.

Singaporean swimmer Joseph Schooling, front right, poses for a photo with people at the Singapore Changi Airport in Singapore.

Singaporean swimmer Joseph Schooling is surrounded by media and people on his arrival at the Singapore Changi Airport in Singapore.

Singaporean swimmer Joseph Schooling, center, is surrounded by media and people on his arrival at the Singapore Changi Airport in Singapore.

Singaporean swimmer Joseph Schooling, center, poses for a photo with his parents, Colin, right, and May, at the Parliament House in Singapore.