Thandi has won four singles titles and four doubles titles on the ITF Circuit- the maiden singles title in $25k Hong Kong tournament on 23 June 2018, and the doubles titles in 2017 in Heraklion, and two in 2015 in Gulbarga. On the ITF Junior Circuit, she achieved a career-high ranking of 32 in January 2016.[7] Additionally, she also made it to the semifinals in two other tournaments in China.[8]
Since 2017 she has represented India in Fed Cup, with a career win–loss record of 3–7 in singles and of 2–1 in doubles.[9]
Karman is supported by the RoundGlass Tennis Academy, Chandigarh[10] and currently trains at the academy under coach Aditya Sachdeva.[11]
Thandi participated in the 2018 Asian Games, with Divij Sharan in mixed-doubles event. They defeated Filipino pairing of Marian Capadocia and Alberto Lim jr in their first match in the Games. But the pair was ousted in third round.[12]
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (P#) preliminary round; (DNQ) did not qualify; (A) absent; (Z#) Davis/Fed Cup Zonal Group (with number indication) or (PO) play-off; (G) gold, (S) silver or (B) bronze Olympic/Paralympic medal; (NMS) not a Masters tournament; (NTI) not a Tier I tournament; (P) postponed; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.
To avoid confusion and double counting, these charts are updated at the conclusion of a tournament or when the player's participation has ended.