Lew Irwin the other two. By 1873, the college students playing football had made significant efforts to standardize their fledgling game. Teams had been scaled down from 25 players to 20. The only way to score was still to bat or kick the ball through the opposing team's goal, and the game was played in two 45 minute halves on fields 140 yards long and 70 yards wide. On October 20, 1873, representatives from Yale, Columbia, Princeton, and Rutgers met at the Fifth Avenue Hotel in New York City to codify the first set of intercollegiate football rules. Before this meeting, each school had its own set of rules and games were usually played using the home team's own particular code. At this meeting, a list of rules, based more on the Football Association's rules than the rules of the recently founded Rugby Football Union, was drawn up for intercollegiate football games. Harvard refused to attend the rules conference organized by the other schools and continued to play under its own code, known as the "Boston game". While Harvard's decision to maintain its code made it hard for them to schedule games against other American universities, it agreed to play McGill University, from Montreal, in a two-game series in 1874. Harvard won the first game, in which its rules were used, 3–0. The second game, which was played under rugby regulations, did not have a winner as neither team managed to score. Harvard quickly took a liking to the rugby game, and its use of the try which, until that time, was not used in American football. The try would later evolve into the score known as the touchdown. On June 4, 1875, Harvard faced Tufts University in the first game between two American colleges played under rules similar to the McGill/Harvard contest, which was won by Tufts. The rules included each side fielding 11 men at any given time, the ball was advanced by kicking or carrying it, and tackles of the ball carrier stopped play. Further elated by the excitement of McGill's version of football, Harvard challenged its closest rival, Yale, to which the Bulldogs accepted. The two teams agreed to play under a set of rules called the "Concessionary Rules", which involved Harvard conceding something to Yale's soccer and Yale conceding a great deal to Harvard's rugby. They decided to play with 15 players on each team.