In this tournament, teams play with seven players on the field opposed to the traditional 15. As an open field game, it is a more athletic, simpler to understand and less physical format of the game. It is also incredibly exciting to both play and watch.
Similar to American football, teams attempt to maintain possession of the ball to score in their own end zone. Rugby, however, requires that the ball be literally "touched down" for the score to count. A touchdown in football equals a try in rugby. After a try is scored, a player from the team then has the chance to score more points by drop kicking the ball through the uprights of the goal post.
There are not as many technical positions in rugby as there are in football, such as a quarterback, a lineman or a kicker. Everyone plays both offense and defense. When a team has possession of the ball, they will run toward their end zone and pass the ball backwards to their teammates when they are stopped by the defense.
There are few breaks in the game. Play does not stop when someone is tackled, so the game is constantly in motion. When the ball is loose on the ground, the teams will huddle against each other in a "scrum," which causes them to hold in one place at a stalemate. Then, the ball is placed in the middle and the teams try to push the ball out of the circle behind their own team.
In a sevens tournament, each half lasts just seven minutes with a one minute halftime. When 15 players compete, the game time is doubled. With so little stoppage time, the game can be exhausting.
Teams that are well conditioned and quicker than their opponents can easily run the score up against anyone. The fastest player on the field, gives his team a great advantage. Having a good defense may not be enough to overtake a dynamic team with better skill.