Choi Jun-yong

Choi attended Kyungbock High School and was classmates with Lee Jong-hyun.[2] While at Kyungbock, he, Lee and their senior Moon Seong-gon, were dubbed the "Kyungbock Trio" by rival high school teams for their well-rounded offensive capabilities.[3] Moon and Lee went on to Korea University while Choi was recruited by Yonsei University.

Choi captained Yonsei to a clean sweep of the three main college basketball competitions (U League, Korean University Basketball Federation championship and the MBC Cup) and was named MVP of the MBC Cup competition, the first time since 2005 Yonsei has won it.[4][5] At that time his teammates included future MVP Heo Hoon and future KBL Rookie of the Year Ahn Young-joon. He declared eligibility for the 2016 KBL draft.

Choi was considered one of the "big 3", along with Lee and Kang Sang-jae, of the 2016 KBL rookie draft and strong contenders for the first pick of the first round.[6][7] He was drafted by Seoul SK Knights as the second pick.

After an uneventful rookie season, Choi began to grow into his role during the 2017-18 season and played a bigger role in Seoul SK Knights' second-place finish in the regular season and KBL Championship win. He averaged 9.5 points, 4.2 rebounds and 3.2 assists.[8] After a 2018-19 season mostly plagued by injury, he returned to the side but found himself having to battle with veteran Kim Sun-hyung for a spot in the starting 5.

On December 8, 2020, it was reported that Choi had been suspended for three games by his team after he accidentally leaked a nude photograph of his teammate on his social media. He and his team immediately posted an apology, explaining that the teammate involved was also a close friend and had accepted the apology and that Choi would serve the suspension with immediate effect.[9] The KBL further extended the suspension to five games and fined him 3 million won.[10]