Κρίστοφερ Ρούνγκατ

Christopher Rungkat spent his junior career in Europe by playing on the European Junior Circuit and was trained in Tennis Val, Valencia, Spain. He is the second Asian male player to win a junior French Open doubles title, after Kei Nishikori. He was the winner of the men's singles title at the Tennis at the 2017 Southeast Asian Games in Kuala Lumpur.

A year later at the 2018 Asian Games in his home country, Rungkat was partnered up with Aldila Sutjiadi for the mixed doubles category in just two weeks, and was not targeted to grab any medals. However, they surprised with getting the gold medal after producing a couple of upsets and eventually beating Thai pair Sonchat Ratiwatana and Luksika Kumkhum in the end to get the gold medal.

He started 2019 with a title in with partner Hsieh Cheng-peng beating former world No. 1 in the doubles semifinal, Leander Paes and partner Divij Sharan. In February, Rungkat reached his first doubles final ATP Tour 250 at the Sofia Open with partner Hsieh Cheng-peng.

Rungkat won his maiden ATP Tour title at the 2020 Maharashtra Open in Pune, India in the men's doubles event, after 13 years on tour. Partnered with André Göransson, Rungkat defeated fourth seed and his former partner Hsieh Cheng-peng who competed with Denys Molchanov 3–6, 6–4, [10–8] in the first round to advance to the quarterfinal. They then surprised the French team of Benoît Paire and Antoine Hoang in straight sets, before securing a spot in the final with a win over Romain Arneodo and Andre Begemann 6–4, 7–6^(7–1). In the final, the pairing defeated third seeds Jonathan Erlich and Andrei Vasilevski in the super tie-break.