This may occur if: 1  You have a sudden drop in blood pressure. 2  Your body does not have enough water (is dehydrated) because of vomiting, diarrhea, fever, and other conditions. 3  You get up too quickly after sitting or lying down (this is more common in older people).
Wimbledon 2015: Rafael Nadalâs coach says itâs good to talk during play. Toni Nadal feels that coaches are getting a rough deal. Toni Nadal, the coach and uncle of Rafael Nadal, believes it is impossible for a coach not to encourage and communicate generally with a player during a match.
Angel RuÃ­z-Cotorro, who has worked as a doctor for Nadal for the past 14 years, said Nadalâs back pain is typical of tennis players and the treatment is meant to help repair cartilage and is similar to stem cell treatment Nadal received on his knee last year. He is expected to return to training in early December.