At what event did Cara Black complete her career Grand Slam in mixed doubles?
2010 Wimbledon
2010 French Open
2010 US Open
2010 Australian Open
Answer
Cara Black won the mixed doubles title at the 2010 Australian Open, completing her career Grand Slam in mixed doubles. She had previously won the French Open, Wimbledon, and the US Open in mixed doubles, and had also won the Australian Open in women's doubles.
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