Leon Smith
GB Davis Cup captain on BBC Radio 5 Sports Extra and BBC Sounds

Janice Tjen has played over 100 ITF World Tennis Tour matches since becoming professional, but you could maybe double or triple that with the college matches she has played as well. She has amassed a huge amount of tennis.

Her confidence levels, her understanding of her game and her understanding of the patterns in games will be up. She will have to test all of that at a higher level here, but she has already won 69 matches this year.

Image source, Getty Images

And she takes it. Emma Raducanu breaks at the first opportunity and that will certainly ease her into this one.

Nervous or not, Emma Raducanu brings up a break point on the first service game of Janice Tjen.

Jonathan Jurejko
BBC Sport senior tennis reporter at Flushing Meadows

Not sure if it was just me, but I thought Emma Raducanu looked a little tense in her facial expression during the warm-up.

As we well know, she does usually feel a little nervous in the mornings before switching into 'game mode'.

That solid service game - getting the backhand slice going to draw mistakes out of Tjen - was a settler.

Good start for Emma Raducanu and she's on the board straight away with a comfortable hold.

Emma Raducanu gets us under way on Louis Armstrong. Can she make it two wins from two?

* denotes next server

Jonathan Jurejko
BBC Sport senior tennis reporter at Flushing Meadows

It is not just in Indonesia where Janice Tjen is starting to gain attention.

The 23-year-old is catching the eye of tennis fans across the world following a rapid rise.

In May 2024, Tjen was unranked as she completed her sociology degree at Pepperdine University in California.

What followed over the next 16 months was remarkable. Tjen won 100 of her 113 matches on the first-rung ITF World Tennis Tour - lifting 13 titles at backwater events from Belgium to China to New Zealand.

Could she step up at do it at the highest level? You betcha.

After coming through US Open qualifying, Tjen stunned 24th seed Veronika Kudermetova on her tour-level debut.

Jonathan Jurejko
BBC Sport senior tennis reporter at Flushing Meadows

Image source, Getty Images

When Emma Raducanu found out she was scheduled to play one of the first matches on the US Open's new Sunday start, it brought a bit of added pressure.

The British number one went into the meeting with Japanese qualifier Ena Shibahara having not won a match at Flushing Meadows since her memorable 2021 title triumph.

Despite a few morning nerves, Raducanu needed only 62 minutes to secure a 6-1 6-2 victory and register the quickest Grand Slam main-draw victory of her career.

"When I saw the Sunday schedule, I thought first day, first match at 11am - you don't want to be out of the tournament by 12:30pm on a Sunday," Raducanu, ranked 35th in the world, told BBC Sport.

"That definitely was on my mind.

"At the same time, if it goes well you get the afternoon off, which is really nice before your day off in between matches."

Janice Tjen was a student at Pepperdine University in California when Emma Raducanu won the US Open as a qualifier in 2021, and she says watching Raducanu's exploits inspired her to a career in the professional game.

"When Emma won the tournament and [was] having an incredible run here, I was actually in college and I was injured at the time, so I got to watch a lot of tennis," said Tjen.

"Just seeing her doing it made me inspired to be able to do it as well. Everyone loves Emma at home. She's a very well-known player and I'm just excited for the opportunity."

Tjen, 23, beat 24th seed Veronika Kudermetova in round one to become the first Indonesian player to win a singles match at a Grand Slam for more than 20 years.

Image source, Getty Images

On Sunday, Emma Raducanu ended a wait of almost four years for a victory at the US Open.

The British number one, who had not won a match at Flushing Meadows since her memorable 2021 triumph as a teenage qualifier, eased through to the second round with a straight-set victory over Ena Shibahara.

"I thought it was a very clean performance, especially for the first round where there are nerves," said the 22-year-old.

"I broke a barrier of not winning a match here for four years. It is a relief. I'm happy to have stopped that and feel I can keep going without that in my head."

BBC Radio 5 Sports Extra

Emma Raducanu has just walked out onto Louis Armstrong Stadium for her second-round match against Janice Tjen.

Listen to live commentary of the best action in sunny New York on BBC Radio 5 Sports Extra, BBC Sounds or via the link at the top of this page.

Image source, Getty Images

It wasn't a great day for the British contingent in New York on Tuesday - five British players were in action and four of them lost.

Hopes of British success in the singles lie with Tuesday's sole winner Jacob Fearnley, along with Jack Draper, Cameron Norrie and Emma Raducanu.

Norrie and Raducanu play their second-round matches on Wednesday, with 2021 champion Raducanu about to get under way against Indonesian qualifier Janice Tjen.

Welcome along to coverage of day four of the 2025 US Open.

The second round starts today at Flushing Meadows, with British number one Emma Raducanu and 24-time Grand Slam champion Novak Djokovic among the players we'll be following early on.

As well as our live text updates, you can click the link at the top of this page for live commentary on BBC Radio 5 Sports Extra.