Navarro strikes first in the deciding set as she breaks Kartal.

Momentum has shifted again and it's the American who looks full of confidence.

Image source, Reuters

Navarro wins the first point on serve but she gets unlucky as her shot clips the net and drops back on her side and that gets prompts a little shift as Kartal wins the next couple of points.

Navarro regroups with a two-handed backhand down the line and Kartal goes long to seal the game for the American.

Kartal seals a very welcome hold to love and that will give her some confidence as the small pocket of British fans cheer her on.

A big Kartal backhand drops the wrong side of the line and Navarro saves break points to take the hold in the first time in this match.

A 12-minute game to kick off the deciding set.

Kartal finds the line with a pinpoint forehand return to the corner to wipe out Navarro's game point and take us back to deuce in this opening game of the deciding set.

Kartal's backhand drops agonisingly long to hand the American another chance to see off this game.

Kartal brings up a second opportunity but again Navarro saves it with a crunching forehand.

Deuce.

No sign of things changing in set three when it comes to the shifting momentum.

Kartal brings up a break point but, for the first time in the match, Navarro saves it as the Brit fires into the net.

Peter Odgers
BBC Sport commentator

That's a great effort when you consider the pressure Navarro will be feeling as the player expected to win. She was a break down twice, she's shown her mental toughness.

Barely anything separating the two players in that second set.

Navarro misses the first set point but levels the match on the second!

The American comes back from a break down to level the match up.

There's been barely anything between these two players so it seems only right that we go to a deciding set.

Image source, Reuters

Kartal comes into the net and tries to drag Navarro in but it doesn't pay off and the American has three set points.

Kartal, serving to stay in the second set, makes a couple of mistakes and Navarro gets to a 0-30 lead.

Another game point comes and goes before Navarro produces a stunning drop shot to bring up another.

This time Kartal can only whip her backhand into the net and that's a gritty hold for the world number 18.

She puts herself within one game of taking the second set and putting this match on level terms.

A whipped forehand from Navarro moves her to game point but Kartal has kept pace with the American throughout this game so far and she moves to deuce.

Melanie South
Former British Fed Cup player on BBC TV

The crowd are doing a great job of keeping the energy high. It has been fantastic crowds throughout this week.

Now Kartal registers a hold to 15.

You just can't separate these two at the minute.

Navarro takes the hold to 15 with a sublime volley and she nudges back ahead as momentum continues to shift in this match.

Melanie South
Former British Fed Cup player on BBC TV

It's almost like every point they have to win. They put together three or four shots that could be winners against other opponents.

Just like earlier in this set, Navarro immediately has the chance to break back.

And she takes it! The American chases down the drop shot and smashes down the line to break back at the first opportunity.

Got it!

Kartal keeps pummelling forehands to the corner and one of them finally pays off as she converts another break point. She has taken all five opportunities she has had in this match.

Image source, Reuters