Volleyball is a popular sport where two teams of 6 players hit a ball across a net which separates the teams.
Each team tries to score a point by hitting a ball onto the other team’s side where the other team cannot return it.
There are two methods for scoring. The original method only allowed a team to score when it "served" (hit the ball first). However, as that made games increasingly long, a second method (now used in competition), called "rally scoring", allows the team who successfully hits the ball and not have it returned (and not foul, such as hitting the net) score regardless of whether it served or received serve.
In competition, scoring is the first team to 25 points, but the team must win by two (similar to tennis scoring). In multi-game matches, best of five is the general rule, but the fifth game is first team to 15 points (but still must win by two).