Sri Lanka captain Angelo Mathews: "The wicket's nice and hard, it's pretty hot and we'll look to put the runs on the board. It won't change much as the game goes on. We've drafted in Tharindu Kaushal, who's a mystery spinner, sort of a duplicate Murali."

South Africa captain AB de Villiers: "We're prepared to face whatever comes our way. We know if we play to our potential, no-one can stop us winning this tournament. We back ourselves. Faf du Plessis comes in for Farhaan Behardien, and Vernon Philander drops out for Kyle Abbott. I'm the back-up bowler!"

So, an unbeaten 64 in the 146-run thrashing of United Arab Emirates is not enough to keep Farhaan Behardien in the side.

South Africa: Hashim Amla, Quinton de Kock (wk), Faf du Plessis, Rilee Rossouw, AB de Villiers (capt), David Miller, JP Duminy, Dale Steyn, Kyle Abbott, Morne Morkel, Imran Tahir.

Sri Lanka: Kushal Perera, Tillakaratne Dilshan, Kumar Sangakkara (wk), Mahela Jayawardene, Angelo Mathews (capt), Lahiru Thirimanne, Thisara Perera, Nuwan Kulasekara, Tharindu Kaushal, Dushmantha Chameera, Lasith Malinga.

Umpires are Nigel Llong and Rod Tucker.

Sri Lanka captain Angelo Mathews calls correctly and his side will bat first.

Hello, good morning and welcome to BBC Sport's live text commentary for the first of the quarter-finals at the 2015 World Cup.

And what a game to get us started.

We have a South Africa side who have twice posted scores of more than 400 up against a Sri Lanka team that have seen Kumar Sangakkara score four successive centuries.

Don't go anywhere. This is going to be good.

Image source, Getty Images

We have had records broken, runs galore, the odd shock and lots of excitement.

But after 42 matches during the round-robin phase, now we get serious.

There can be no more slip-ups. Win and you go through, lose and you go home. Welcome to the knockout stages.

Image source, Getty Images