Kammala jumla mai zuwa: A ranar 30 ga Maris, 2004, Chhetri ya buga wasansa na farko ga tawagar 'yan wasan Indiya ta U-20 a nasarar da ta samu a kan' yan wasan Pakistan U-23 a gasar cin kofin duniya ta 2004.
Wasannin SAF na 2004 a Pakistan. A ranar 3 ga Afrilu 2004, Chhetri ya ci kwallaye biyu don tawagar 'yan wasan Indiya U-20 da Bhutan U-23 a nasarar da suka samu na 4-1. A ranar 12 ga Yuni 2005 Sunil ya zira kwallaye na farko don manyan 'yan wasan kwallon kafa na Indiya da Pakistan.