Coached by AN Sharma, Sangwan was a member of the Delhi under-15 team that won the Polly Umrigar Trophy in 2005.
[3][4] Sangwan was a member of the victorious Indian team at the Under-19 World Cup held in Malaysia in 2008 and bowled several incisive spells with the new ball.
[5] He took 8 wickets, including a spell of 5/44 that was crucial in India's victory against South Africa in the group stage.
[6] Sangwan was the first under-19 pick at the inaugural Indian Premier League draft, and was bought by the Delhi Daredevils.
[7] He was signed by Kolkata Knight Riders for the 2011 season and in January 2018 was bought by Mumbai Indians.