Tennis legend Chris Evert has opened up about how her younger sister's devastating death from ovarian cancer helped to 'save her life', revealing how her sibling's battle with the disease prompted her to undergo testing - allowing her own cancer to be detected incredibly early. The 67-year-old offered a candid glimpse into her cancer battle for an upcoming episode of HBO's Real Sports, with GMA airing a preview clip on Monday morning - in which Evert is seen undergoing her final rounds of chemo, while paying tribute to her late sister Jeanne Evert Dubin. 'My sister's death saved my life,'...