The backboard in basketball serves as a support structure for the rim and net, allowing players to shoot the ball through it to score points.

Batting gloves are worn by baseball players to protect their hands from blisters and injuries caused by the impact of the baseball when hitting.

The offside rule in soccer aims to prevent players from gaining an unfair advantage by positioning themselves too close to the opponent's goal before the ball is played.

The libero player in volleyball specializes in receiving the opponent's serves and is often positioned in the back row to effectively handle the incoming serve.

Hockey helmets are essential protective gear for hockey players, designed to shield their head and face from potential injuries caused by the puck, sticks, or other players.

The yellow penalty flag in American football is used by officials to mark the spot where a foul or penalty has occurred, allowing the referees to assess the appropriate punishment.

In field hockey, players use hockey sticks to control, pass, and shoot the ball, making it the primary tool for playing the game.

The net in tennis serves as a physical barrier that divides the court into two halves, preventing the ball from passing directly from one side to the other.

Cricket pads are protective gear worn by cricket players on their legs to shield them from the impact of the cricket ball during bowling.

The scrum in rugby is a set piece where players from both teams bind together and compete for possession of the ball, typically after a minor infringement.

Lacrosse helmets are essential protective gear for lacrosse players, designed to shield their head and face from potential injuries caused by the lacrosse ball or other players' sticks.

The shuttlecock in badminton is used to hit the opponent's court, with the aim of making it difficult for them to return the shot and ultimately score points.

Catcher's mitts are specialized gloves worn by baseball catchers to protect their hand and wrist from the impact of the baseball when receiving pitches from the pitcher.

Goal line technology in soccer is used to accurately determine whether the ball has completely crossed the goal line, assisting referees in making correct goal/no goal decisions.

Hockey pads are protective gear worn by hockey players on their legs and feet to shield them from the impact of the puck, sticks, or other players.