South Africa run in seven tries to earn bonus point and go top of Pool B
Kolbe (2), Mbonambi, Am, Mapimpi, Snyman and Marx go over for Springboks
Italy prop Andrea Lovotti sent off for tip-tackle on Duane Vermeulen
Italy had won opening two matches
South Africa face Canada in final pool game, Italy take on New Zealand
South Africa 32-3 Italy
Image source, Getty ImagesYou have to feel for Italy captain Sergio Parisse.
He's just come off and his head is in his hands as he realises his hopes of a World Cup knockout game are all but gone.
It is the 36-year-old's 142nd cap - going second on the all-time list, six off Richie McCaw's record.
South Africa 32-3 Italy
Rory Lawson
Former Scotland captain on BBC Radio 5 Live Sports Extra
South Africa are a power team and on their day they have shown they can beat anybody and they are building in confidence.
Damian De Allende has come into play a lot in this second half, they've got big hitters everywhere.
Lukhanyo Am, con Handre Pollard
Image source, AFPIt's back and forth like basketball and eventually South Africa centre Lukhanyo Am breaks down the wing and coasts over to earn the bonus point for his side.
Handre Pollard kicks the conversion - he now has 114 World Cup points to break Percy Montgomery's mark of 111 points for the Springboks in World Cups.
South Africa 25-3 Italy
Almost a try twice!
South Africa are about to go over in the left corner, but Michele Campagnaro intercepts and sprints half the length of the field.
He loses the ball, South Africa gather and Pieter-Steph du Toit is held up short.
South Africa 25-3 Italy
So as the players come on and off the field Wayne Barnes is reminding Italy that even though the scrums are uncontested they must still have eight men in the set-piece.
South Africa 25-3 Italy
Rory Lawson
Former Scotland captain on BBC Radio 5 Live Sports Extra
Image source, Getty ImagesThat was brilliantly won by Kolbe - he's been the small spark who has ignited this South African inferno which has finally got burning.
South Africa 25-3 Italy
Surely South Africa will get the bonus point try now?
A man over, fresh legs, especially in the forwards and something to prove against another tier one nation.
Stay tuned to us and find out!
Cheslin Kolbe
Image source, Getty ImagesHandre Pollard chips a beautiful cross-field kick to the right flank and Cheslin Kolbe is there to gather and dive over in the corner.
Pollard misses his first kick of the night, sending it just right of the posts.
Handre Pollard
Image source, Getty ImagesHands on the ball in the ruck and Italy give away a penalty in front of the posts which Handre Pollard chips over.
Malcolm Marx comes on for South Africa.
South Africa 17-3 Italy
Rory Lawson
Former Scotland captain on BBC Radio 5 Live Sports Extra
The crowd need something to spark them into life, it's a very healthy good crowd but they just need something.
South Africa 17-3 Italy
South Africa have made a number of changes, including replacing both props.
You would expect with them having an extra man that we will see a few more tries in the final 33 minutes.
With that, Willie le Roux breaks down the left wing, but he shins his grubber kick to try and get past the winger and it trickles out for a line-out. The former Wasps man is not a happy Springbok!
South Africa 17-3 Italy
Image source, Getty ImagesHandre pollard finds a big hole in the defence and puts Pieter-Steph du Toit through.
But there was an obstruction by Siya Kolisi to create the hole and after a television replay it is disallowed.
South Africa 17-3 Italy
Rory Lawson
Former Scotland captain on BBC Radio 5 Live Sports Extra
It's ugly, he is lucky he doesn't actually come down on his head.
It's idiocy from Andrea Lovotti.
South Africa 17-3 Italy
Image source, PA MediaWhat was the Italian loosehead thinking? He carries on the challenge on Duane Vermeulen and he can have no complaints as he is sent off after the South African is lifted and dropped headfirst to the ground.
His team-mate Federico Zani can count himself lucky he's not off as well.
South Africa 17-3 Italy
Could be a problem here for an Italian player as South Africa number eight Duane Vermeulen is tipped into the ground head first by both Italian props - not looking good for Italy here...
South Africa 17-3 Italy
What a run by Italy's South African-born flanker Braam Steyn - he blasts through the defence and Italy eventually win a penalty for offside deep in South African territory.
South Africa 17-3 Italy
Well played by Italian fly-half Tommaso Allan - under huge pressure in his own in-goal area from Faf de Klerk he kicks clear and finds touch.
From the line-out South Africa win the ball, but Italy's defence does enough for force a knock on and they will have the scrum, which is uncontested, just outside their 22.
South Africa 17-3 Italy
Handre Pollard kicks off as South Africa aim to claim second place in Pool B.
HT: South Africa 17-3 Italy
Image source, Getty ImagesIreland head coach Joe Schmidt said replacing Johnny Sexton at half-time in Ireland's 35-0 World Cup win over Russia was "tactical" as the Irish laboured before earning a vital bonus point.
Sexton's invention helped Ireland start well as they led 21-0 at half-time but the display dipped after his departure.
Sexton picked up a thigh strain in Ireland's impressive opening win over Scotland and missed the shock defeat by hosts Japan last Saturday.
The Ireland fly-half was spotted putting an ice pack on his thigh area as he watched the second half in Kobe City but Schmidt played down suggestions he was "managing" the injury.
"Not really. He's just kind of trying to cover his bases really. He certainly could have played on," said Schmidt.
"That was my decision to take him off. We had three tries. We only needed one more [to get the bonus point]."
The Irish are two points clear at the top of Pool A, but have played a game more than second-placed Japan and third-placed Scotland, who are a further four points adrift.
Japan take on Samoa on Saturday while Scotland do not play again until Wednesday when they face Russia.
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Graham Roberts: I think the boys in blue will be pretty happy with the current scrum situation. The Boks might just decide that the best way to go now is to keep the ball alive.