Martina Hingis was not one of Kuznetsova's doubles partners. Kuznetsova has had several successful partnerships throughout her career, including with Svetlana Kuznetsova, Zvonareva, and Navarro. Hingis, on the other hand, primarily partnered with Jana Novotna during her career.
Unraveling Svetlana Kuznetsova: A Quiz on the Russian Tennis Dynamo