England have been slashed to 37/20 to complete a 3-0 series whitewash of South Africa after winning their Twenty20 opener in style.
It was a near-complete performance from England as they hammered South Africa by nine wickets at the Ageas Bowl and the home side are now 1/5 to win the series, with the Proteas out to 7/2.
A disciplined bowling performance saw the hosts take three early wickets to heap the pressure on South Africa and their skipper AB De Villiers, and paved the way for the convincing victory.
Hampshire's 20-year-old leg-spinner Mason Crane was handed his international debut at his home ground and he played his part in restricting South Africa.
He and county team-mate Liam Dawson strangled any chance of De Villiers and Farhaan Behardien piling on the runs after JJ Smuts was bowled by David Willey off the first ball of the match.
England were never in trouble in their chase of 143 as Johnny Bairstow hit 60 off just 35 deliveries to claim man-of-the-match honours.
“It is as close to a complete performance as you can ask for,” said England captain Eoin Morgan.
“The bowlers did an unbelievable job even after taking early wickets. Both ends from the spinners didn't get away from them, the two spinners held their nerves really well and I think there was a bit more in the pitch than when we batted.
“The way we came out and batted dictated things to them. (Jason) Roy smokes for a few overs and it takes the game away.”
England can be backed at 19/20 to win the series 2/1 and are 4/6 to win the second match of the series, which takes place in Taunton on Friday.
Bairstow is 7/1 to top score and 9/1 to again be named man of the match.