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.
Miloš Zličić
Miloš Zličić( born 29 December 1999) is a Serbian football forward.
He is a younger brother of Lazar Zličić.
Vadim Vlasov
Vadim Nikolayevich Vlasov( born 19 December 1980) is a former Russian football player.
He is a younger brother of Dmitri Vlasov.
Yu Chang-kwon
Rear Admiral Yu Chang Kwon( or Yu Chang- kwon) was the Commander- in- Chief of the Korean People's Navy in 1975.
Later on, he was purged along with many other generals.
Cho Se-whee
Cho Se-whee( born 14 June 1991), also spelled Cho Se-hui, is a South Korean model and beauty pageant titleholder who was crowned Miss Universe Korea for 2017.
Cho represented South Korea at Miss Universe 2017.
Cho Se-kwon
Cho Se- Kwon( born June 26, 1978) is a South Korean former professional football player.
As a player he represented Chunnam Dragons, Ulsan Hyundai Horang- i, Goyang Kookmin Bank as well as Chinese clubs Liaoning Hongyun and Chongqing Lifan.
While internationally he was a part of the South Korea U23 team that took part in the 2000 Summer Olympics.
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.
Cho Se-hui
Cho Se-hui is a Korean author.
Cho Se-jong
Cho Se-jong( born 18 August 1978) is a South Korean sport shooter.
He participated at the 2018 ISSF World Shooting Championships, winning a medal.
Grady Alderman
Grady Alderman( December 10, 1938 – April 5, 2018) was an American football player and executive.
He played professionally as an offensive tackle for 16 seasons in the National Football League( NFL), mostly with the Minnesota Vikings.

Question: Who is younger, Cho Se-Kwon or Grady Alderman?