Chris Jones
BBC rugby union correspondent

The game is in danger of getting out of control. It's 17:50 (BST) and we’ve not even played 30 minutes of match time.

Is this what happens when officials feel under extreme pressure to not make a single mistake?

Ben O’Keeffe handling himself well in incredibly difficult circumstances. Both sides are playing right on the edge.

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One for the cameras.

The ball flies through the Lions' hands quickly as green jerseys fly up in defence.

But the move breaks down when Stuart Hogg is tackled and the Springboks win the penalty.

Ugo Monye
2009 Lions winger Ugo Monye

Ben O’Keeffe has been as busy as the players this half. He has been tested by the players.

Two yellow cards for Van de Merwe and Kolbe. O’Keeffe's temperament and communication throughout has been clam and clear. It's not a classic, but still has the tension and feel of a huge game.

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Three points in it. 14 men apiece. Finely poised.

There's not much to separate the two sides.

Former England play Andy Goode would have given Kolbe more than a yellow!

It's yellow.

Cheslin Kolbe joins opposite number Duhan van der Merwe in the bin.

Both sides are down to 14 men.

Rugby Paper journalist Adam Ellis has had his say...

Now then.

Handre Pollard smashes the ball high and Conor Murray is taken out in the air by Cheslin Kolbe.

Both sets of players fly in and passions are high.

The South Africa winger does not take his eyes off the ball but Murray lands awkwardly after the coming together.

It's being reviewed by the TMO. Will it be yellow or red?

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Was that really necessary?

Lions winger Duhan van der Merwe trips opposite number Cheslin Kolbe.

The Scotland international will spend 10 minutes in the bin.

Could this be a big moment in the series?

Pieter-Steph du Toit looks uncomfortable as he leaves the field with what looks like a shoulder injury.

The influential Springbok flanker is replaced by Kwagga Smith.

Have Rassie Erasmus' words had the desired effect?

The Lions are on their feet in the ruck and contesting the ball, but the penalty goes South Africa's way.

It looked like a fair attempt to win the ball and the Lions can count themselves unlucky.

Handre Pollard doesn't miss many, but he's just nudged his penalty wide of the posts.

South Africa still trail by three points.

The Lions take the lead as Dan Biggar makes it two from two off the tee.

Chris Jones
BBC rugby union correspondent

Encouraging signs in defence and at the maul again for the Lions.

But ominously, the Boks have already got the ball into Cheslin Kolbe’s hands on a few occasions. More already than last week.

No quarter being given.

Red and green shirts are clattering into each other all over the field.

Test match physicality.

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Dave Sommerville: I do feel that the Lions were robbed in South Africa in 2009 - so I really hope that today is payback time, but I can't see the Springboks throwing away a lead again like they did last week

Parity is restored!

Dan Biggar sends the ball sailing over the posts.

The Lions are on the front foot for the first time and Dan Biggar opts for a huge kick into the air.

Willie Le Roux jumps for possession but the South Africa full-back knocks on.

The Lions will have the scrum close to the Boks' line.

The Boks are on the scoreboard as Handre Pollard kicks the penalty over with ease.

Cheslin Kolbe gets his hands on the ball and evades a couple of red shirts before being hauled down.

Play is brought back for an earlier penalty for the Springboks and Handre Pollard will have a shot at the posts.