Question: Name the doubles partner who assisted an American professional tennis player known primarily as a doubles specialist and current tennis broadcaster for ESPN, defeat Larisa Savchenko and Natasha Zvereva in the 1989 Virginia Slims Championships?
Sentence (from "1989 Virginia Slims of California – Singles"): Martina Navratilova was the defending champion of the singles event but lost in the semifinals of the 1989 Virginia Slims of California tennis tournament to Larisa Savchenko.
Relevant evidence: No