Novak Djokovic's nutrition based performance guide SERVE TO WIN is expected out on August 20, 2013. â€śFinding the right foods for my body has made me lighter, healthier, and more focused. Itâ€™s made all the difference in my career and in my life, and in the lives of the people around me,â€ť Djokovic said. â€śIt is important to me that I share this knowledge with readers, so they too can realize their dreams.â€ť Djokovic attributes his success to a gluten-free diet and a performance-focused nutrition plan, which he adopted in late 2010. I for one am very curious. Looking forward to it. Published by Zinc Ink, a division of Random House.