London: After brilliant show by the bowlers, Jonathan Trott displayed great commitment to help England beat South Africa by seven wickets and reach final of the Champions Trophy on Wednesday.
South Africa failed to get rid of their chokers tag in major tournament as they were overpowered by hosts England in all departments in the first semifinals.
Invited to bat, South African batsmen collapsed like pack of cards before late flourish by David Miller guided the side to a fighting 175 at the Oval.
Though England lost openers cheaply after a slow start, brilliant show by Trott and gritty show by Joe Root powered the side to a thumping victory.
Chris Morris got rid of Alastair Cook after a slow start by England. Cook (6) edged Miller to man behind the stumps at the score of 22 in the seventh over.
Rory Kleinveldt then inflicted second blow on England by sending back Ian Bell after his knock of 20 and reduced England to 41/2.
Bell flicked Kleinveldt straight to AB de Villiers on the final delivery of the 11th over.
Root and Trott then shared 105-run stand to set up for England before JP Duminy bowled out Root for 48.
Trott then didn't allow South Africa any further success. He stayed unbeaten after scoring 82.
Earlier, South Africa risked 'choking' in yet another semifinal after England ripped through their ranks to restrict them to 175 all out from 38.4 overs.
It could have been worse for South Africa had it not been for a ninth-wicket stand of 95 between David Miller (56 not out) and Rory Kleinveldt (43).
England won the toss under overcast skies at The Oval and soon had South Africa reeling at four for two after James Anderson and the returning Steven Finn removed Colin Ingram and Hashim Amla in their opening overs.
Robin Peterson, again promoted up the order, tried to steady the ship with 30 but was then trapped lbw by Anderson before captain AB de Villiers (duck) and JP Duminy (three) followed in quick succession.
Spinner James Tredwell, continuing in the absence of the injured Graeme Swann, took his second wicket when Faf du Plessis (26) edged behind a cut shot with the ball barely spinning.
Slip Jonathan Trott expertly ran out Ryan McLaren for one after the batsman had advanced down the track to Tredwell, who took three for 19, before the tail wagged as Miller top scored and Kleinveldt hit an ODI best.
South Africa, who were without injured pace bowler Dale Steyn, have never won a major international cricket title despite their prowess and famously threw away a 1999 World Cup semi against Australia when a last-ball run out caused a tie.
Five other international semifinal defeats have come and gone since for the Proteas, who mainly had themselves to blame at The Oval with England bowling well but not spectacularly as the white ball again failed to move significantly.
Hosts England will now fancy their chances of knocking off the runs and reaching the final of cricket's second 50-over tournament at Edgbaston on Sunday. The second semifinal between India and Sri Lanka takes place on Thursday in Cardiff.
Earlier, England have won the toss and elected to bowl.
Dale Steyn has failed a fitness test, Rory Kleinveldt replace him.
In England Graeme Swann and Tim Bresnan are also out. James Tredwell and Steven Finn in.
England: Alastair Cook (Captain), Ian Bell, Jonathan Trott, Joe Root, Eoin Morgan, Ravi Bopara, Jos Buttler (wk), Stuart Broad, James Tredwell, Steven Finn, James Anderson
South Africa: Hashim Amla, Colin Ingram, Faf du Plessis, AB de Villiers (Captain & wk), Jean-Paul Duminy, David Miller, Ryan McLaren, Robin Peterson, Chris Morris, Rory Kleinveldt, Lonwabo Tsotsobe
South Africa 175 (Miller 56*, Tredwell 3-19, Broad 3-50)
England 179 for 3 (Trott 82*, Root 48)
Result England won by 7 wickets
MOM James Tredwell (England)