"Wozniacki was key to his daughter's rise to No. 1, but many doubt she has the offensive weapons needed to win a major. The Woznicaki camp brought in Spanish coach Ricardo Sanchez, but fired him after the 2012 Australian Open after just two months on the job. ""If Caroline finds a coach that she thinks might suit her, we'll take him,"" Piotr said after dismissing Sanchez.    Here's a look at some of the most notable tennis dads who have coached their kids."
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