Why do volleyball teams use hand signals and what are the most common hand signals they use? - Quora
![Nishikori signals the 'bird' strategy in his doubles match @ London Olympics 2012. Do you need any more proof for scratching the event - anywhere? Or are we not done experimenting if Nishikori signals the 'bird' strategy in his doubles match @ London Olympics 2012. Do you need any more proof for scratching the event - anywhere? Or are we not done experimenting if](https://media.tumblr.com/tumblr_m7zimj43X31qlew1u.bmp)
Nishikori signals the 'bird' strategy in his doubles match @ London Olympics 2012. Do you need any more proof for scratching the event - anywhere? Or are we not done experimenting if
Womens Doubles Tennis Hand Signal Stock Photo - Download Image Now - Doubles - Sports Competition Format, Tennis, Adult - iStock
![Jamie Murray: 10 things you didn't know about doubles tennis (including what whose hand signals really mean) Jamie Murray: 10 things you didn't know about doubles tennis (including what whose hand signals really mean)](https://www.telegraph.co.uk/content/dam/men/2017/07/07/TELEMMGLPICT000133996392_trans_NvBQzQNjv4Bq8JWdQZ1J_PyHeSO_SJ-VAuQ7InuxQIQ-797__fFjSOg.jpeg)