In the world of professional tennis, players often have unique quirks and rituals. But Learner Tien, the young American sensation, has caught the eye of fans and analysts alike with an unusual serving habit. Unlike most pros who approach the line with a single ball in their pocket as a backup, Tien confidently strides to serve with two balls tucked away.

Tien’s success on the ATP Challenger Tour was particularly noteworthy. He claimed three Challenger titles in 2024, the most of any player in the Next Gen ATP Finals field. His maiden Challenger victory came in July at the Cranbrook Tennis Classic in Bloomfield Hills, Michigan. He followed this up with triumphs in Las Vegas in September and Fairfield in October, showcasing his consistency and ability to perform under pressure.

Tien’s stellar year earned him a spot in the 2024 Next Generation ATP Finals in Jeddah, Saudi Arabia, where he continued to impress:

• Finished second in Blue Group play, defeating Jakub Mensik and Arthur Fils
• Advanced to the final by overcoming Alex Michelsen in the semifinals
• Made history as the first player in the tournament to defeat the Top 3 seeds
• Finished as the runner-up in a closely contested final against Joao Fonseca, with scores of 2-4, 4-3(8), 4-0, 4-2

Tien’s performance at the Next Gen ATP Finals not only showcased his skills against his peers but also hinted at his potential to compete at the highest levels of the sport in the coming years.