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.
Serena Williams returns to Angelique Kerber during the women's singles final at Wimbledon on July 9. Angelique Kerber returns to Serena Williams in their singles final during Wimbledon on July 9. French tennis coach Patrick Mouratoglou, coach of Serena Williams, prepares to watch the women's singles final.