Explanation:

- Manpreet Singh: As of July 30, 2020, Manpreet Singh was the captain of the Indian Men's Hockey Team. He played a significant role in leading the team and is known for his dynamic midfield presence.

- Jarmanpreet Singh: He is a promising hockey player, but he was not the captain of the team during this time.

- Gurinder Singh: Another important player in the Indian hockey squad, but not the captain as of the given date.

- Harmanpreet Singh: Known for his exceptional drag-flicking skills, he has been a crucial part of the team; however, he was not the captain in July 2020.

Based on the information above: .