Singh started his footballing career at Mahindra United in the I-League and scored eight goals in eleven games while with Mahindra till Mahindra disbanded.
After Mahindra United disbanded Singh joined another I-League club. This time it was Kingfisher East Bengal F.C.. During his first season with East Bengal in 2010-11 Singh played in five games and scored one goal.
Signalling his steady decline in match-readiness and age, in July 2015, Singh was drafted to play for Atlético de Kolkata in the 2015 Indian Super League, being ineligible for any of the auctions.
He has been signed on by the thrifty Mumbai FC for the I-League2015-16 season where he is on loan from Atletico de Kolkata. He is seen as the fallback forward in the club featuring a few prominent Japanese players. While, his and the club's performance for most of the season has been lacklustre, he has managed to score 4 goals during appearances which did not feature the primary scorer for a team which has been plagued with injuries.
He has been signed on by the NEROCA FC from Manipur and scheduled to play in the 2016-17 Durand Cup in Delhi. This is club participates 2-steps below the divisions of the leagues that he has been participating in the last couple of years. While, the club made it to a historic final on its debut at the Durand Cup 2016 riding on the effort of the young manipuri team, the team lost the trophy in penalties to Army Green when Sushil hit a ground sitter to the opposite goalkeeper. Post this, he plays mostly from the bench making way for a better and younger African forward in Emmanuel.
International
Sushil has represented the India national football team several times. In 2009, he led the India U-23 team to the SAFF championship where he scored from a free kick against Bangladesh to help India go into the finals and face Maldives. c'è su fifa Sushil scored his third goal for India's seniors against Qatar in India's historic 2-1 victory away from home. He was then selected by India for the 2011 SAFF Championship in which he played in two matches, including the final and scored one goal which came in the final which India won 4-0 over Afghanistan on 11 December 2011.
