Dr Mark Nesti, Club sport psychologist Hull City AFC and Reader in Sport Psychology at Liverpool John Moores University: 'As usual, David gave a stimulating and thought provoking presentation to the Hull City first team staff at Oulton Hall near Leeds on our whole staff away day. His messages about excellence and making most use of your core weapons was perfectly timed for our first season in the Premier League'.

Hull City manager Phil Brown added: 'Speakers like David Sammel have a lot to offer to those wishing to take their game onto the next level. The staff and myself found his ideas challenging and particularly relevant to us at this moment in the club's development'.

Brown talks about work with a tennis coach (Dave Sammel) to Gabby Logan on Inside Sport

This is what Sam Allardyce, former manager of Bolton Wanderers Football Club, had to say about David’s work with the club and the 'Locker-Room Power' presentation, which features in this workshop. "David gave a presentation to the key coaching staff and me. His style is direct, humorous and interesting. The content reflected a genuine understanding of top-level mentality and a key understanding of what is required to produce high performance on a daily basis - the hallmark for all great individuals and teams and people in pursuit of excellence."

Sam Allardyce

I just wanted to say that I came across Jez Green's web site while searching for articles on 'tennis movement' and was very impressed by his understanding of this subject. It helped me help my daughter improve her game by at least 30%. Also, I think your academy's vision on how to produce great players is very exciting.

Keith Borholm

Hey David I just wanted to say thanks you for the assessment and that it was a great experience even if i did perform very poorly on the 40/20's! Cheers and if you get a chance say thank you again to Barry Cowan as well.

Cliff

Steffi found it very worthwhile experience and her report is her basis for her improvement in tennis though she really will pursue her tennis aspirations. She is very proud to be one of the tennis players participating that day with the MCTA. Once again we would like to thank you for everything, MCTA does helped her a lot in physical, mental and inspirations for being an aspiring pro...

Hi David - I just wanted to thank you for giving such an honest appraisal within Oliver's assessment and the extra time you took to speak with Oliver personally.