He is a gifted midfielder and plays in the right-half position. Gurbaj made his India debut in 2006 at the Asian Games in Doha, Qatar. He represented India at the 2010 World Cup in New Delhi, 2010 Commonwealth Games in New Delhi, the 2010 Asian Games in Guangzhou, China, and the 2012 London Olympics.
He was a member of the 2007 Asia Cup winning squad in Chennai and the silver medal winning teams at the 2010 and 2014 Commonwealth Games.
In domestic hockey, he represents Punjab Police (employers) and Punjab state in the nationals. His earlier club was Air India.
Hockey player gurbaj singh explains why is he taking hockey india to court