If the bird lands on the line it is considered in bounds. You serve overhand in the game of badminton.
A rally is lost if the shuttle is hit into the net, or over the net but outside of the opponent's court. A rally is also lost if the shuttle touches the player's clothing or body, or if it is hit before it crosses over the net.
For Doubles: During service, the left & right side boundaries are considered as valid. While, the back boundaries are considered as invalid. However, during game play the complete court is considered as valid.
Winning a point in badminton A point is won if the birdie (shuttlecock) hits the ground in the opponent's half of the court, including the lines.
The lines marking out the court are easily distinguishable and coloured white or yellow. The lines are 40mm wide. A court may be marked out for singles only. The back boundary lines also become the long service lines and the posts or the strips of material representing them are placed on the side lines.
As per standard rules, side lobby is allowed for service. Both side and back lobbies are allowed for rest of the rally until shuttle drops to the ground. At the beginning of the set and when the score is even, the server serves from the right service court.
In singles the court is thinner, with the wide, outside 'tramlines' out of bounds. In doubles the court is full width and these tramlines are now 'in'. During service in doubles, the court is short, with the rear 'tramlines'at the back of the court, being out of bounds until the serve is returned.
🏸 Fun Fact: If the shuttle hits any part of the line, even just 1%, it's considered IN! The server earns the point in this case.
The outer sidelines are marked 5.18m (17.00ft) apart and run parallel to one another. Any shot that lands inside the doubles sideline is considered “in” or valid for doubles matches. If the shuttlecock lands outside the outer sideline in doubles, it is considered out of play.
The lines marking out the court are easily distinguishable and coloured white or yellow. The lines are 40mm wide. A court may be marked out for singles only. The back boundary lines also become the long service lines and the posts or the strips of material representing them are placed on the side lines.