Image source, .

Serena Williams is back at Wimbledon, home hope Johanna Konta is also lurking... but who else is in the running to take the women's title?

Simona Halep: The world number one won her first Grand Slam at the French Open.

Petra Kvitova: The Czech has won Wimbledon twice, and has secured five titles this year - more than anyone else.

Garbine Muguruza: The Spaniard has reached either the French Open or Wimbledon final in each of the past three years but her grass-court season began with defeat by Barbora Strycova at Birmingham.

Caroline Wozniacki: The world number two won her first Grand Slam at the Australian Open and warmed up for Wimbledon by winning Eastbourne on Saturday.

No break from Harriet Dart, yet... but the 21-year-old does fling down a couple of serves that are even more fiery than the weather at Wimbledon to take a 30-0 lead.

A scorching ace brings up 40-15, but a wayward forehand approach and a double fault take Karolina Pliskova back to deuce.

Dart rattles down a string-busting serve to save break point, and finally the Londoner holds.

*denotes next server

Katherine Wyld: After almost assaulting the village postman this morning in an attempt to claim my tickets in time, it’s Wimbledon o’clock!

Sam Smith
Former British number one at Wimbledon

This is like having passed your driving test and then driving on the motorway for the first time.

It is daunting, Dart is playing one of the most complete players in the world, hits it hard and flat through the court, doesn't give you a lot of time.

We're whistling through the first set in this opening-round match, as Harriet Dart holds serve after that earlier break from Karolina Pliskova.

It's the Czech seventh seed in a commanding position though.

Saj Chowdhury
BBC Sport at Wimbledon

"Mariaaaa, you've gotta see her...forehand return."

The former champ is on the practice courts - pummelling the ball alongside world number one and French Open winner Simona Halep.

The Romanian is taking on two players - that's why she is where she is.

They both open their campaigns on Tuesday.

Halep faces Kurumi Nara and Sharapova, the 24th seed here, is up against Russia's Vitalia Diatchenko.

Image source, BBC Sport

Image source, BBC Sport

First dent in Harriet Dart's opening-round hopes, as Karolina Pliskova breaks the serve of the 21-year-old wildcard.

"Come on, Harriet," goes the cheer from one of the many spectators gathered around Court 12 to keep tabs on the British youngster.

How about this... you can choose from 15 (FIFTEEN!) courts to watch live by scrolling through the menu at the top of this page.

Don't say we don't spoil you...

Image source, BBC Sport

No messing around from Karolina Pliskova, she absolutely rattles through her opening service game with Harriet Dart even able to make a dent on the scoreboard to level it up.

The grass on Court 12 is looking wonderful. Got to love the opening day. Lush.

*denotes next server.

Saj Chowdhury
BBC Sport at Wimbledon

Madison Keys - a cheeky outsider for the title?

US tennis is not just about Serena. OK, so a lot of it is but...but they do have strength in depth in the women's game.

Number 10 seed Keys, 23, has had an exceptional year. She reached the US Open final and also this year's French semis.

She's up against Aussie Ajla Tomljanovic, who reached the second round in 2015.

It's on Court Three at 13:30 BST.

Straight sets.

Image source, BBC Sport

Harriet Dart is serving first in her Wimbledon singles debut over on Court 12.

The British wildcard edges into a 30-0 lead against Karolina Pliskova, before the Czech seventh seed recovers to take it deuce.

But the 21-year-old polishes off with a plumb serve to hold and get off the mark.

Andrew Castle
BBC Sport tennis commentator

There are great players everywhere, everyone gets younger, everyone gets fitter, everyone is nervous. The coaches, the physios the players, they are here to do a job and we are here to watch them do it.

Jonathan Jurejko
BBC Sport at Wimbledon

Image source, BBC Sport

After half an hour of hitting, Federer decides that'll do for now. He's got another chance to play in the south-west London sunshine just after 1pm.

Not many players are given a huge round of applause when they finish practice. Roger does.

"Great to have you back Roger!" shouts one fanboy.

Then a whole team of security staff usher him back towards the locker room, through the hordes of fans, virtually all armed with camera phones.

Except one fella who tried high-fiving Fed. Fed left him hanging.

Image source, .

Roger Federer the defending champion, Rafael Nadal the world number one... here's a quick look at who might challenge the men's top two.

Novak Djokovic: The three-time champion is working his way back after a year disrupted by an elbow injury but showed glimpses of his best form at the French Open and Queen's.

Marin Cilic: The Croat is a proven force on grass, having reached last year's final and won Queen's last month.

Alexander Zverev: Only Federer and Nadal have outperformed the 21-year-old this year.

Dominic Thiem: The Austrian reached his first major final on his favoured surface at Roland Garros.

John McEnroe
Three-time Wimbledon singles champion on BBC One

What Roger Federer has done the last 18 months, winning three of the six, having taken that six month lay-off, is the greatest accomplishment in the open era of tennis, what he has continuously been able to do.

Look at mere mortals like Stan Wawrinka, Novak Djokovic, Andy Murray - you can go down the list of top players who have missed six months. You try to walk back in and see how easy it is to get back into the top of the sport. He effortlessly did it at 35.

Jonathan Jurejko
BBC Sport at Wimbledon

Image source, BBC Sport

Anywhere will do to get a glimpse of Roger Federer. Many fans are stood on the back of the adjacent court 14 and peering over.

One man was even given a ticking off for trying to scale the back of the temporary stand.

Wouldn't surprise me if there are a few home-owners in those two block of flats behind the All England Club stood at their windows with binoculars trained on old Rog.

Right, it's almost time for the first ball to be served... and a first Brit in action!

Harriet Dart is making her Wimbledon singles debut after being handed a wildcard, with the 21-year-old facing seventh seed Karolina Pliskova on Court 12.

We'll be keeping you up to date on that one

Carol Kirkwood
BBC Weather Presenter

The hugest recorded temperature over the fortnight at Wimbledon was 1 July 2015, 35.7C, hotter than today.

Today will be dry weather with a lot of sunshine, it may stay dry for the duration of the fortnight.

It will be about 30C, north easterly wind about 10 miles an hour, high UVA levels.