Gargi Banerji made her international debut when she still hadn't turned 15, at the Eden Gardens in a World Cup match against England. However her ODI achievements were nothing to write home about as she averaged 15.73 from 26 matches over eight years.

Six years later she played her first Test, in a match where India fielded five other newcomers and Australia seven. She scored a half-century in the second innings and another one in the fourth Test of the series drawn 0-0. After two fifties, and incredible 6 for 9 in Cuttack, against New Zealand, Banerji was picked India's first tour of England - in 1986 - where she scored 60 and 75 in the Blackpool Test. Sandhya Agarwal's century overshadowed Banerji's performance but she made it to Australia in India's next tour in 1991. However low scores in the two Tests she played meant the end of the road for Banerji.

Banerji began seriously pursuing the game after joining a cricket camp for women in Calcutta. She was drafted in to the Bengal side and soon made the jump to the national team.