[2][3] Sajjan Singh was born in 1957 in Dabulian village in Kapurthala district in Punjab state.

[4] He studied at Kamalia Khalsa High School Kapurthala and at Sport College Jalandhar.

He started playing basketball in 1976 and first participated in Inter university tournament held in Jaipur in 1976.

Guneet Kaur the daughter of Sajjan Singh has played in the under-17 category at the national level.

His nephew Amritpal singh cheema is international kabbadi player famous with title name know as Shurli khiranwalia [8] Being appointed as the Candidate for Aam Aadmi Party from Sultanpur Lodhi Constituency for the Punjab elections of 2017.