He was the only Indian to win a medal in the 2013 ISSF World Cup, when he won bronze with a very minor difference between the second place in 10 metre air pistol event in Changwon, South Korea.

[3] Nanjappa won a bronze medal in the 2013 ISSF World Cup in Changwon, South Korea, in the 10 metre air pistol event having scored 180.2 points in the final.

Following his recovery, in October 2013, Nanjappa won the silver medal in the 50 metre pistol event in the Asian air gun championship in Tehran.

[3] In the 2014 Commonwealth Games in Glasgow, Nanjappa won the silver medal in the 10 m air pistol event, having scored 198.2 points in the final.

[5] Nanjappa qualified for the 2016 Rio Olympics in Men's 50 metres Pistol event, where he finished 25th in the qualification round.