Katie Boulter left the court without speaking after suffering what must have been a crushing disappointment.

The 29-year-old saw off world number two Elena Rybakina in the quarter-finals but may well have expended too much energy in that grueling three-set win.

Donna Vekic, meanwhile, only qualified for this WTA 500 tournament as a lucky loser but will now face either Briton's Emma Raducanu or Iva Jovic in Sunday's final.

Raducanu returns to action at 17:20 BST after winning through her quarter-final 6-3 7-5 against Kamilla Rakhimova earlier today.

Click on the play icon below to watch Raducanu's reaction after reaching the last four.

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Croatian tennis player Donna Vekic speaking after her semi-final win over Britain's number three Katie Boulter at Queen's:

"First of all, to be playing on this incredible court, it's such an honour. The more time I get to spend on this court, the better, so I'm happy I have another chance tomorrow."

On her performance in the semi-final:

"I have been improving with each match and that's usually how it goes on grass, the more time you spend on it the better you get. I love this surface, I love this city. I'm really happy."

On why she wrote "I love London" on the TV monitor after her win:

"I spent a lot of time here training when I was younger so I have lot of friends here.

"It feels like a second home to me."

Donna Vekic lost just six points on her serve and dropped four games in total as she made her first tour level final in two years, since winning the silver medal at the Olympic Games in Paris.

Donna Vekic produces a first double fault of the match with the winning line in sight, but counters with some more powerful strokes to march to a 5-3 lead in the second set.

The Croatian is one game from victory.

The power of Donna Vekic's groundstrokes are continuing to trouble Katie Boulter, but the Briton hangs tough to win another service game with a drive volley.

Vekic needs two more games for victory - can Boulter put a dent in her serve?

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No chinks in the Donna Vekic armour as yet, as the Croatian holds with the minimum of fuss.

The next game is crucial for Katie Boulter's chances.

That will do Katie Boulter the world of good.

The Briton comes through a relatively simple service game, dropping just one point on the way.

Boulter remains a break down and trails by one set as she aims to become the first British woman to reach a singles final at Queen's since 1970.

This is all one-way traffic, I am afraid.

Donna Vekic has dropped just four points on serve and claims another service hold to love.

Katie Boulter cannot afford to go another break down, you would imagine.

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Katie Boulter is struggling to rekindle the magic that took her to a famous win over world number two Elena Rybakina in the last eight.

Another double fault and a poor attempted drop shot hand Donna Vekic two break points.

Boulter saves them both, thanks to some more accurate serving, but a second botched drop shot gives her opponent a third break point of the game and the Croatian takes it after the Briton fires into the net.

No chance for Katie Boulter there, another hold to love from Donna Vekic.

Katie Boulter produced four double faults and 12 unforced errors in total in that first set.

She added another double fault to the count in the first game of the second set and let her opponent back into the game with an unforced error as Donna Vekic took her to deuce.

But this time 29-year-old Boulter held her nerve to escape with the game, following up a 108mph first serve with a crashing winner.

Donna Vekic breezes to the first set, winning another game to love, finishing off with another strong serve that Katie Boulter has no answer for.

It's a long way back from here, but Boulter has shown in her run to the Queen's semi-finals that she has plenty of bottle when it counts.

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That looked to be more like it from Katie Boulter -the world number 73 matches Donna Vekic's heavy hitting in the longest rally of the match before putting herself 30-15 up with an impressive forehand winner into the corner.

Two lax points, including a double fault, put Boulter at risk of losing another service game, but she rallies to force deuce.

But a running winner down the line gives Vekic another break point and the Croatian goes 5-1 up, heading towards the first set, after another unforced error from Boulter.

Katie Boulter takes Donna Vekic to deuce as she starts to make inroads into the Croatian's serve, but a strong overhead at the net puts Vekic a point from the game and Boulter goes long with a wild shot in the next rally.

The Briton remains a break down in this opening set.

A shriek of "come on" from Katie Boulter follows a wide shot from Donna Vekic, which sets up game point, and the Briton follows with a strong serve to win the next and get a game on the board.

Katie Boulter goes long with a forehand and Donna Vekic opens a 3-0 lead in the opening set, dropping just a point in her second service game.

Can Boulter respond?

A net cord helps set up a first break point of the match for Donna Vekic at 30-40 and a double fault from Katie Boulter hands her Croatian opponent a 2-0 lead.

It's been quite the whirlwind already today for Boulter, who needs to quickly reset after yesterday's thrilling quarter-final victory.

Right, we move straight into semi-final action now, with GB's Katie Boulter up first against Croatian Donna Vekic.

Vekic made short work of her opening service game, winning that to love.

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Emma Raducanu has secured her place in the Queen's semi-finals after beating Kamilla Rakhimova for two sets.

She will return to the court later today for her semi-final, where she will face Iva Jovic.

Raducanu said: "That was really tricky, she played some really good tennis and that was a match with a lot of ups and downs."

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