Comparison of American football and rugby union football, except high school (all but Massachusetts & Texas), allows conversion turnovers that are returned for touchdowns to be given 2 points. In American football teams often opt to go for a field goal (worth 3 points) rather than attempt a touchdown, either because it is fourth down and they don't want to risk a turnover or because it is late in the game and the three points will either tie the game or put the team ahead. The rugby equivalent is a drop goal (worth 3 points). The key difference between a field goal and a drop goal is
Rugby union gameplay carrying the ball can be tackled and once a tackle is completed the opposition can compete for the ball. Play continues until a try is scored, the ball crosses the side line or dead-ball line, or an infringement occurs. After a team scores points, the non-scoring team restarts the game at the halfway with a drop kick towards the opposition. The team with the most points at the end wins the game. A typical passage of rugby union takes the following form. Unlike rugby league and gridiron football, possession of the ball in rugby union is contestable at any time