Pankaj Singh

1. Coached by Mahendra Singh Dhoni

   "He was handed his debut test cap by Mahendra Singh Dhoni."

2. Captained under Mahendra Singh Dhoni

   "He was handed his debut test cap by Mahendra Singh Dhoni."

3. Schoolmates with Alastair Cook

   "Pankaj Singh could have had Alastair Cook as his first Test wicket had Ravindra Jadeja not dropped the catch off Singh's bowling."

4. Schoolmates with Ishant Sharma

   "He made his test debut vs England at the Ageas Bowl in the 3rd Test of the series after Ishant Sharma was ruled out due to an injury."

5. Schoolmates with Joe Root

   "On his debut Pankaj achieved a unique record of being the most expensive bowler in test debut without a single wicket. He conceded 179 runs during the match against England in July 2014. His maiden wicket came in his second match and with his 416th ball when he dismissed Joe Root on 77."

6. Schoolmates with Jos Buttler

   "On his debut Pankaj achieved a unique record of being the most expensive bowler in test debut without a single wicket. He conceded 179 runs during the match against England in July 2014. His maiden wicket came in his second match and with his 416th ball when he dismissed Joe Root on 77. He also dismissed wicketkeeper-batsman Jos Buttler a few overs later."

7. Schoolmates with Munaf Patel

   "He was part of India A's twin tour of Zimbabwe and Kenya and a total of 18 wickets in the unofficial Tests and ODIs in Kenya earned him a spot for the home series against South Africa A. With Sreesanth and Munaf Patel injured,"

8. Schoolmates with Ravindra Jadeja

   "Pankaj Singh could have had Alastair Cook as his first Test wicket had Ravindra Jadeja not dropped the catch off Singh's bowling."

9. Schoolmates with Sreesanth

   "He was part of India A's twin tour of Zimbabwe and Kenya and a total of 18 wickets in the unofficial Tests and ODIs in Kenya earned him a spot for the home series against South Africa A. With Sreesanth and Munaf Patel injured,"

Source: Wikipedia, extracted via LLM.