Captaincy has become a burden for Michael Vaughan of England, says coach Duncan Fletcher.
Fletcher said Vaughan's string of low scores before and during the World Cup could be a result of the captaincy and the pressure of leadership weighing on him.
"He's putting himself under pressure when he's had a few bad knocks and may be the captaincy is getting to him," Fletcher said.
"Having chatted to him, he looks very confident and is still full of belief about his captaincy, but he probably just puts pressure on himself knowing he has to go out there and get runs."
After Vaughan became the captain, he has been an inspiration for England in Test cricket with 4,595 runs in 64 matches, averaging under 43.
He has, however, failed to deliver in one-dayers with 1,856 runs at 26.51 in 81 matches, without a century.
But Fletcher is backing his captain to pull things around and make amends. His chance will come when he faces against the Bangladeshi Tigers at Kensington Oval on Wednesday.
"I believe he is a good one-day batsman but he has got to get back to realising his true potential," said Fletcher.
"It's not as if he's batting badly. He's batting very well in the nets and he looks and feels at the top of his game."