Novak Djokovic is chasing more Australian Open glory but the challengers to his pursuit of tennis history are getting younger and bigger - ABC News
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Novak Djokovic plays at Wimbledon with the number '23' printed on his white tennis shoes | CityNews Kitchener
![Aug. 14, 2011 - Montreal, Quebec, Canada - Novak Djokovic's shoe during the finals at the Rogers Cup. (Credit Image: © Leon Switzer/Southcreek Global/ZUMAPRESS.com Stock Photo - Alamy Aug. 14, 2011 - Montreal, Quebec, Canada - Novak Djokovic's shoe during the finals at the Rogers Cup. (Credit Image: © Leon Switzer/Southcreek Global/ZUMAPRESS.com Stock Photo - Alamy](https://c8.alamy.com/comp/DK9ARJ/aug-14-2011-montreal-quebec-canada-novak-djokovics-shoe-during-the-DK9ARJ.jpg)
Aug. 14, 2011 - Montreal, Quebec, Canada - Novak Djokovic's shoe during the finals at the Rogers Cup. (Credit Image: © Leon Switzer/Southcreek Global/ZUMAPRESS.com Stock Photo - Alamy
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