when is a tie break used in tennis
Tennis scoring system A set is won by the first side to win 6 games, with a margin of at least 2 games over the other side (e.g. 6–3 or 7–5). There is usually a tie-break if the set is tied at six games per player.
Tennis A recent rule change is to allow coaching on court on a limited basis during a match.[60][61][62][63] This has been introduced in women's tennis for WTA Tour events in 2009 and allows the player to request her coach once per set.[64]