Jeong Weon Ko turned professional in 2020 and went on to sign with ISM later on in the year.
Rising as high as 37 in the World Amateur Golf rankings, he finished third in the Alps Tour's Order of Merit in 2020, securing Challenge Tour status for the following year.
Highlights of Jeong's debut year on the Challenge Tour were a share of fourth place at the Range Servant Challenge by Hinton Golf, 10th at the Open de Bretagne and 12th at the Vierumaki Finnish Challenge on the way to 62nd spot on the Road to Mallorca.
