Egypt's Nouran El Torky beat South African Cheyna Tucker 3-0 (11-3, 11-8, and 11-4) to claim the women's title at the Jaipur Club Courts.
A stiffer fight was expected between the two team-mates of Indian team which won a historic gold at the just-concluded Incheon Asian Games, but Sandhu was the better player on the day winning 11-5, 11-5 and 11-6 against an erratic top seed Mahesh.
In the second game, Mahesh played some top-flight shots but could not stop Sandhu from taking a 4-0. But, Mahesh got the parity at 4-4 and took lead but could not hold on to it for long. Sandhu took the second game again 11-5.
The third game saw Mahesh throwing his racket on the floor in frustration only to receive a conduct warning. Mahesh was in the lead at 6-5. But Sandhu rallied superbly to take an 8-2 lead. At 10-6, Sandhu served for the match and won the game 11-6 to emerge champion of the first JSW Challenger tournament here.