Great Britain lose 2-0 to the United States in Billie Jean King Cup semi-finals
Katie Boulter loses 3-6 6-4 6-2 to world number seven Jessica Pegula
Sonay Kartal earlier beaten 3-6 6-4 6-3 by Emma Navarro
18-time champions United States will play defending champions Italy in Sunday's final
Great Britain have never won women's team title, finishing runner-up four times
Pegula 3-6 2-2 Boulter*
What a miss! Pegula hangs her head as she misses the backhand while advancing into the net.
And there's the break back for Boulter.
Just as you thought the momentum was shifting over to Pegula.
Image source, Reuter*Pegula 3-6 2-1 Boulter
Wow. That's one way to respond to a break of serve.
Three break points to Boulter in rapid style.
*Pegula 3-6 2-1 Boulter
Jessica Pegula seizes her opportunity with Katie Boulter netting a groundstroke. Could that be a turning point in the match?
Boulter didn't capitalise on two break points in the previous game...
Pegula 3-6 1-1 Boulter*
After a slight wobble to find herself trailing 15-30, Katie Boulter lets out a roar after levelling the game with a forehand drive volley.
However, she hits a forehand long to hand Jessica Pegula an opportunity to get right back into this match.
Peter Odgers
BBC Sport commentator
Pegula gets out of jail in that game. This sport is all about match-ups, and it seems like Boulter likes where the majority of balls come from Pegula.
Pegula 3-6 1-1 Boulter*
Phew. A huge hold for Jessica Pegula and the US.
A couple of groundstroke errors from Katie Boulter allow Pegula to navigate deuce with limited fuss.
*Pegula 3-6 0-1 Boulter
Jessica Pegula finds a big serve to save the second break point.
*Pegula 3-6 0-1 Boulter
Katie Boulter makes no mistake with her net approach, getting down low for a cushioned volley winner.
Jessica Pegula mops her brow after an error hands Boulter 0-30.
Although she pulls a point back, she then nets a smash to find herself facing two break points. Uh oh.
*Pegula 3-6 0-1 Boulter
A lot of fist-pumping from Katie Boulter, a lot of return errors from Jessica Pegula.
Boulter sends the American sprawling with a wide serve to hold to 30. Lovely.
Olga Savchuk
Ukrainian former player on BBC Red Button
It's her chance to beat Pegula. She has to stick to this kind of game. For sure Pegula will now come out and challenge Boulter.
Pegula 3-6 0-0 Boulter*
And there it is! Jessica Pegula finds the net again and Katie Boulter takes the first set 6-3.
Great Britain have been here before - Sonay Kartal led Emma Navarro by a set before losing in three - so they won't be getting ahead of themselves.
Image source, ReutersOlga Savchuk
Ukrainian former player on BBC Red Button
Boulter is playing unbelievable. Pegula isn't getting the chance to enter this match.
*Pegula 3-5 Boulter
Jessica Pegula nets two backhands. Katie Boulter has set point.
*Pegula 3-5 Boulter
Boulter has certainly made dramatic improvements on serve. She looks much more confident with it.
Pegula has a winner in her sights but her forehand drops the wrong side of the line before she slams into the net and that's the hold for Boulter.
The Brit is one game away from taking this first set.
Pegula 3-4 Boulter*
Pegula stops the rot with a hold to love before the change of ends but will have to find a way to break down what has so far been a really solid serving performance from Boulter.
Melanie South
Former British Fed Cup player on BBC TV
First strike tennis from Boulter. She wants it done in the first two shots.
Olga Savchuk
Ukrainian former player on BBC Red Button
Jessica Pegula is feeling rushed. It doesn't feel like she's getting stuck into these games.
*Pegula 2-4 Boulter
Another solid service game on the board for Boulter.
She takes the hold to 15 with no drama and consolidates that break of serve.
Pegula 2-3 Boulter*
Finally got it!
At the fifth time of asking, Boulter takes the break to nudge ahead in set one.
Peter Odgers
BBC Sport commentator
Pegula is rock solid on break points.