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Tien's Rise: From Tennis Skeptic to Top 20 Star

Learner Tien used to switch tennis off.

Now he’s one of the reasons people switch it on.

The 20-year-old American is in the middle of a breakout 2026 season: a second ATP title in Geneva, a first Grand Slam quarter-final at the Australian Open, a Canadian Open semi-final, and a surge into the world’s top 20. His electric shot-making has turned him into must-watch viewing, with even Roger Federer among those openly admiring his game.

‘It was kind of boring to me’

Speaking on The Big T Podcast, Tien laid out a striking confession for a player now thriving on the ATP Tour.

“I did not watch much tennis growing up,” he said. “It was kind of boring to me, it was too slow. I think the changeovers and the breaks, it just wasn't engaging enough for me.”

He tuned in for the biggest stages — the Grand Slams, the marquee clashes — but even those didn’t always hold him.

“I would watch the Slams and the big matches where I knew this is an important match, but even with some of those matches I would zone out and I wouldn't really watch.”

He never became the kid who devoured five-set epics from first ball to last. Instead, he grazed on the sport in bite-sized form.

“I liked watching Monfils a lot, but I was more of a here and there highlight watcher. I never was a guy to sit down and watch the whole match.”

The young Tien didn’t just struggle with televised tennis. Live tennis tested his patience as well.

“I would say when I was young the reason I didn't like watching tennis in person and on TV was because the changeovers were very long and I had to wait in between points. But now playing I would not want any of those things to be shorter because that is my break. A minute and a half feels very short now but back then it was like an eternity. I would just turn the TV off.”

The irony is sharp. The pauses that once drove him away from the screen are now the precious oxygen he needs between brutal, high-intensity exchanges.

From highlight-watcher to headline act

This season, Tien has become the sort of player he used to seek out in those quick-fire clips: explosive, aggressive, and unafraid of big stages.

His Geneva title confirmed his status as more than a one-surface threat. The Australian Open quarter-final run announced him to the wider sporting public. The Canadian Open semi-finals underlined that his game translates to the heavyweight Masters 1000 level.

That combination has propelled him into the top 20 and into the conversation as one of the most exciting young players on tour. It has also put him in a very different relationship with the grind of the calendar.

The kid who once flicked off the TV at the sight of a towel break now lives from changeover to changeover.

One last push in Paris

For 2026, the finish line is in sight.

Tien’s singles schedule is down to one final stop: the Paris Masters. His Vienna Open campaign ended at the hands of Alex de Minaur, leaving the indoor swing to hinge on one last week in Bercy.

He knows the setting. Tien made his Paris debut in 2025, bowing out in the second round to Andrey Rublev. This time, he arrives with something he didn’t have then: a seeding.

His rise up the rankings guarantees he will avoid fellow seeds until at least the third round. On fast indoor courts, that kind of protection can tilt a draw just enough to open a path to a deep run.

But the opportunity comes laced with pressure.

Tien has relatively few points to defend from last year’s Paris campaign, yet the rankings math is unforgiving. He will lose 250 points from his first ATP title in Metz — a tournament that has since disappeared from the calendar. Those points vanish regardless of what he does in Paris.

That makes this final Masters 1000 of the year more than just a late-season tune-up. It’s a test of how he handles expectation, arithmetic, and fatigue all at once.

If he misfires, he could slip out of the top 20 just as he seemed to be planting his flag there.

If he catches fire indoors in Paris, the player who once found tennis “too slow” could close 2026 as one of the sport’s fastest-rising forces.