Graeme Swann backed Ravi Bopara to become a fine England all-rounder following his record-breaking display in Friday's Twenty20 international against West Indies at The Oval.
Bopara took 4-10 to beat the previous best England figures in a T20 international of 4-22, shared by Jade Dernbach and Paul Collingwood.
"Bopara was unplayable," said Swann, captain of England for the first time.
"He has good control these days and is developing into a fine all-rounder."
"He never looked like going for any runs out there - he was phenomenal."
England thrashed West Indies on the night, winning by 10 wickets after Craig Kieswetter and Alex Hales led England beyond the modest target of 125 set by the tourists.
Swann was delighted to get off to a winning start as captain of a youthful England team that included three debutants.
"I enjoyed every moment," said Swann. "It was a dream start as captain. I asked the boys to give everything and they did that, I was delighted with the way everybody performed."
Bopara revealed that he was delighted but embarrassed at delivering record figures of 4-10.
"It feels quite embarrassing that I have the best figures when you've got the incredible bowlers we have in our team," he said.
"But I'm very proud to be a part of this team. We've got a very tough series coming up in India, which will test us.
"The way we've played this summer in England has been exceptional. To beat Sri Lanka and India - the two teams that contested the World Cup final - on our own turf is an unbelievable thing."
The second and final match of the series takes place on Sunday at The Oval with a 1830 BST start.