Shang Juncheng

In 2019, Shang was the first player born in 2005 to win a tournament on the ITF Junior Circuit.[7]

Shang played in the French Open and reached the quarterfinals, in which he lost to Sean Cuenin in two sets. He also played in the Wimbledon Junior Event and reached the semifinals. He lost to Victor Lilov in two sets. In the US Open Junior Event, he reached the final and lost to Daniel Rincón in two sets (2–6, 6–7⁶).

Shang made his debut on the professional tour, after receiving a wildcard to play in the main draw of the ATP Tour 500 event at the 2022 Rio Open, after Juan Martín del Potro announced his retirement from professional tennis. Shang was defeated by Pedro Martínez in the first round.

He received a wildcard into the qualifying draw of Indian Wells, where he beat Francisco Cerúndolo in the first round and his opponent Mats Moraing retired in the second. Having qualified into the main draw, he became the first Chinese man to play at Indian Wells and the first player from his country to qualify for an ATP Masters 1000. He was defeated by Jaume Munar in straight sets.[8] He won his first title at the 2022 Lexington Challenger becoming the youngest Chinese player to win a trophy in the Challenger Tour history and the youngest since Carlos Alcaraz at Alicante in 2020.[9] He reached the top 200 at world No. 195 on 19 September 2022.

Shang made his Grand Slam debut by qualifying at the Australian Open, after defeating Fábián Marozsán, 16th seed Fernando Verdasco and Zsombor Piros, becoming the youngest male player at the tournament and the youngest Grand Slam men's qualifier since 17-year-old Carlos Alcaraz at the 2021 Australian Open.[10][11] He became the 10th Chinese mainland player to reach the main draw at this Major in 2023.[12] It was the first time a male Chinese trio was set to compete in a major singles draw in the Open era (since 1968) and the first in all of Australian Open history (since 1905).[13][14] Shang defeated Oscar Otte in the first round, becoming the first Chinese male player to win a match at the Australian Open in the Open Era.[3] He then lost in straight sets to Frances Tiafoe in the second round.

At the French Open he qualified for his second Grand Slam in a row by defeating Pablo Cuevas, Marozsán and Renzo Olivo.[15]

He competed at the 2023 Atlanta Open where he lost to Kei Nishikori and in his second ATP 500 in Washington D.C. defeating Emilio Gómez (tennis) and 14th seed Ben Shelton (tennis) before losing to second seed Frances Tiafoe.[16]

He played his first ATP tour event on homeland at the 2023 Zhuhai Championships[17] where he lost to Mackenzie McDonald.[18] He received a wildcard for the next Asian tournaments, the China Open in Beejing where he lost to Yoshihito Nishioka and the 2023 Rolex Shanghai Masters.[19]