Here are Tuesday's results:

• Judd Trump 6-1 Barry Hawkins
• Mark Allen 6-2 Si Jiahui

The first round concludes on Wednesday, with reigning world champion Kyren Wilson facing Zhang Anda (13:00 GMT) and 2023 Crucible winner Luca Brecel playing Chris Wakelin (19:00 GMT).

Both matches will be available to watch on BBC TV, BBC iPlayer and the BBC Sport website and app.

After a scrappy start to the eighth frame, Si Jiahui misses a routine red and Mark Allen jumps all over it with a break of 80 to secure a 6-2 win.

He'll play Mark Selby in the quarter-finals on Thursday.

The reds go a bit awkward in frame seven but Mark Allen makes a couple of telling contributions to move within one frame of victory and a quarter-final against four-time world champion Mark Selby.

Si Jiahui goes for a risky pot on a red early in frame six but gets it all wrong and Mark Allen is on hand to punish him.

The Northern Irishman falls just short of another century, but a 94 break is more than enough for him to go 4-2 up.

In the first frame after the mid-session interval, Si Jiahui makes a break of 60 to get to the brink of the winning post.

A long red to the left corner makes it safe and the Chinese debutant is back within one of the 2018 Masters champion.

Ken Doherty
1997 world champion on BBC Four

Image source, PA Media

Mark Allen is such a wonderful break-builder.

He's got that short cue action and great control of the cue ball. When he gets in and around the pink and black, he's deadly. He's scoring very heavily.

After that first frame of about 40 minutes, the frames have gone very quickly.

Si looks relaxed out there. He missed one ball at the start of the fourth frame that he maybe should have got, but other than that I think he's coped pretty well out there.

Another fine break from Mark Allen, this time a contribution of 70, puts him 3-1 in front at the mid-session interval.

He's halfway to the six frames he needs to reach the quarter-finals.

Mark Allen replies with a century break of his own to retake the lead against Si Jiahui.

After a long opener, frames two and three have been won with tons.

Shot of the tournament?

Click on the play button below to watch Si Jiahui's miraculous escape from a snooker in the opening frame of his first-round match against Mark Allen.

Stephen Hendry
Seven-time world champion on BBC Four

This will give something for Mark Allen to think about.

It was a bad mistake to go in-off and this young man has shown him what can happen if he gives him chances to score.

Image source, PA Media

Si Jiahui spreads the reds all over the table with a safety shot and leaves Mark Allen a fairly easy starter.

However, Allen goes in-off when potting the red.

That leaves Si an excellent chance to accumulate and the young Chinese player does just that - it's not always straightforward, but he knocks in a 103 break to level the match.

Mark Allen takes a first frame which lasts just over 40 minutes.

Si Jiahui needs three attempts to get out of that snooker behind the blue - and it really is a fantastic escape - but it gives Allen the upper hand in the first frame, despite still being behind on the scoreboard.

Another tough snooker to hit, this time behind the black, provides the chance for Allen to put it beyond reach.

The first frame has been going for about 30 minutes now and it's still in the balance.

Masters debutant Si Jiahui produces some confident pots during a break of 49, which gives him a lead of 13 points with four reds left on the table.

After potting a red to end a lengthy safety exchange, Allen drops Si in a horrible snooker behind the blue.

Ken Doherty
1997 world champion on BBC Four

If you went on current form and experience, everything weighs in Mark Allen's favour.

However, this young man Si Jiahui - what a talent.

He's fearless, we saw what he did in the [2023] World Championship and he should have been in the final, but for that wonderful comeback from Luca Brecel in the semi-final.

He's great to watch and thoroughly entertaining, and this crowd will absolutely love the way he plays the game.

Image source, Getty Images

After Judd Trump's victory over Barry Hawkins earlier on Tuesday, now it is the turn of another former Masters champion to make their entrance to the 2025 tournament.

Northern Ireland's Mark Allen, the 2018 winner at Alexandra Palace, faces Masters debutant Si Jiahui for a place in the quarter-finals.

The 22-year-old from China reached the semi-final of the World Championship on his Crucible debut in 2023.

BBC Four

Watch coverage of Tuesday's second match between Mark Allen and Si Jiahui on this page from 19:00 GMT.

It is also available to watch on BBC Four and the BBC iPlayer.

Image source, PA Media

Judd Trump wraps up victory in style with a century break - his first of the match.

A contribution of 112 secures a 6-1 win over Barry Hawkins and sets up a quarter-final against Ding Junhui.

Barry Hawkins gets a frame on the scoreboard and avoids a dreaded 6-0 defeat at Alexandra Palace - although not without a few alarms.

Hawkins pots a wonderful red to the middle pocket to start a break of 70, which is enough to leave Judd Trump needing a snooker.

Trump clears up to the yellow before attempting to snooker Hawkins on the green.

"The Hawk" escapes and, after more snooker attempts, he rolls in a long blue to secure the frame.

Judd Trump moves one frame away from a place in the Masters quarter-finals.

Trump knocks in a 56 break and, after Barry Hawkins goes in-off attempting to pot a red, Trump adds the few extra points he needs to go 5-0 ahead.

Steve Davis
Six-time world champion on BBC Two

You do feel this frame is a must-win for Barry Hawkins - maybe the next two.