The definition of touchdown was expanded in 1900 to encompass scenarios in which the ball becomes dead on or above the goal line. The value of a touchdown was increased to six points in 1912. In addition, the end zone was constructed. Prior to these changes, there was no set number of points for a touchdown; instead, each team got one chance per game. After several incidents involving disputed touchdowns in the early years of the NFL, the league established rules governing how and where players could touch the ball (offense) or stay in bounds (defense). These rules are known today as the American football code. In 1958, with only three seconds left on the clock and his team down by four points, Lenny Lyles scored a touchdown via the fair catch rule. This would not be possible under current scoring standards because the ball would have had to cross the goal line with time still running off the clock. However, at that time, a touchdown was worth six points. So, even though the Rams lost this game 14-6, they earned themselves a point for the effort. This is why you will sometimes see references to "onside kick" or "fair catch touchdown" in old NFL games. Such instances are now counted as overtimes rather than new games, but they were once considered official scores.