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.
After eight years of working together, Serena and her hitting coach Sascha Bajin apparently are going their separate ways. But Bajin, known to tennis fans as Big Sascha, isn't leaving the WTA Tour, instead -- based on what we can gather from the Twitter exchange -- he's going to work for Azarenka.