Former England captain and well known cricket commentator Tony Greig today passed away at the age of 66. He was diagnosed with lung cancer recently. According to Greig's son, his father's cancer had progressed to "stage four". He was also diagnosed with bronchitis in May this year, but it was only in October that Greig announced he was battling lung cancer. Following the World Twenty20, where Greig had gone as a TV commentator, he underwent diagnostic tests which revealed that he had a lesion on his right lung. Further testing confirmed that the lesion was cancerous. Greig also underwent an operation and chemotherapy to fight the condition.