![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
Why do volleyball teams use hand signals and what are the most common hand signals they use? - Quora
![Cologne, Germany. 24th Oct, 2020. Tennis: ATP Tour - Cologne Championships (ATP), doubles, men, semi-finals, Mies (Germany) and Krawietz (Germany) - M. Daniell (New Zealand) and P. Oswald (Austria). Kevin Krawietz gives Cologne, Germany. 24th Oct, 2020. Tennis: ATP Tour - Cologne Championships (ATP), doubles, men, semi-finals, Mies (Germany) and Krawietz (Germany) - M. Daniell (New Zealand) and P. Oswald (Austria). Kevin Krawietz gives](https://c8.alamy.com/comp/2D7NKRF/cologne-germany-24th-oct-2020-tennis-atp-tour-cologne-championships-atp-doubles-men-semi-finals-mies-germany-and-krawietz-germany-m-daniell-new-zealand-and-p-oswald-austria-kevin-krawietz-gives-his-partner-a-hand-signal-credit-jonas-gttlerdpaalamy-live-news-2D7NKRF.jpg)
Cologne, Germany. 24th Oct, 2020. Tennis: ATP Tour - Cologne Championships (ATP), doubles, men, semi-finals, Mies (Germany) and Krawietz (Germany) - M. Daniell (New Zealand) and P. Oswald (Austria). Kevin Krawietz gives
![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)