1 Neutrophils: are the most abundant type of white blood cells and are an important part of the innate immune system. 2  Neutrophils are a type of phagocyte (cells which engulf and then digest, cellular debris and pathogens).
BBC Sport tennis. The rules of scoring. The maximum number of sets in a match is five for men and three for women. Usually the first player to win six games wins a set but if the score becomes five-games-all, one player must be two games ahead to win the set. So a player must win the set 7-5 or 8-6 or 9-7 and so on.
Tennis is played on a rectangular, flat surface. The court is 78 feet (23.77 m) long, and 27 feet (8.2 m) wide for singles matches and 36 ft (11 m) for doubles matches. Additional clear space around the court is required in order for players to reach overrun balls.