New Delhi, Aug. 23 -- Twenty-two former international cricket captains have written another letter to Pakistan Prime Minister Shehbaz Sharif, renewing their appeal for medical treatment of former ODI World Cup-winning captain Imran Khan following recent developments that they say fall short of a Supreme Court directive, according to Cricinfo.

The letter was signed by Michael Atherton, Alex Blackwell, Allan Border, Michael Brearley, Greg Chappell, Ian Chappell, Belinda Clark, Alastair Cook, Michael Gatting, Sunil Gavaskar, Kapil Dev, Lee Germon, Adam Gilchrist, David Gower, Kim Hughes, Nasser Hussain, Clive Lloyd, Arjuna Ranatunga, Andrew Strauss, Dilip Vengsarkar, Steve Waugh and John Wright.

"Pakistan's Supreme Court ordered that Imran...