Markus Weissenberger
Markus Weissenberger( born March 8, 1975) is an Austrian former footballer who played as a midfielder.
He is a younger brother of former Austria international player Thomas Weissenberger.
Dmitri Varfolomeyev (footballer, born 1978)
Dmitri Nikolayevich Varfolomeyev( born 15 March 1978 in Leningrad) is a former Russian football player.
He is a younger brother of Sergei Varfolomeyev.
João Monteiro
João Pedro Andrade Selgas Monteiro( born 29 August 1983) is a Portuguese table tennis player.
At the 2015 European Championships, he won the Gold Medal in the Doubles competition.
He also competed at the 2012 Summer Olympics in the Men's singles, but was defeated in the second round.
This was a round further than he managed at the 2008 Summer Olympics.
João Monteiro practices at the Werner Schlager Academy in Schwechat, Austria since the opening in 2011.
Roman Smishko
Roman Smishko is a retired Ukrainian professional footballer who played as a goalkeeper.
He is a younger brother of Ukrainian defender Bohdan Smishko.
Raul Isac
Raul Tyson Isac Dias Monteiro or Raul Isac( born 2 February 1988) is an East Timorese international footballer who currently plays as a defender for North Sunshine Eagles FC and the Timor- Leste national team.
Anton Shunto
Anton Shunto( born 31 May 1988) is a Belarusian professional footballer.
As of 2019, he plays for Molodechno.
He is a younger brother of Denis Shunto, who is a founder and former president of Krumkachy Minsk.
Vadim Vlasov
Vadim Nikolayevich Vlasov( born 19 December 1980) is a former Russian football player.
He is a younger brother of Dmitri Vlasov.
Miloš Zličić
Miloš Zličić( born 29 December 1999) is a Serbian football forward.
He is a younger brother of Lazar Zličić.
Wellington Monteiro
Wellington de Oliveira Monteiro or simply Wellington Monteiro( born September 7, 1978 in Rio de Janeiro) is a defensive midfielder player from Brazil.
Naoya Sakamoto
Naoya Sakamoto (born 29 June 1988) is a Japanese male sprint canoeist.
He was born in Tanabe, Wakayama.
At the 2012 Summer Olympics, he competed in the Men's C-1 200 metres.
At 2014 Asian Games he won a silver medal in the men's C-1 200 m event.

Question: Who is younger, João Monteiro or Naoya Sakamoto?
Answer: Naoya Sakamoto