By 1921, however, defenses had begun to respond to the new scoring restrictions and were able to lower the scoring averages of the country's best teams. College football teams averaged 13 to 16 points per game throughout the Roaring Twenties and the Great Depression. The highest average score in any year from 1920-29 was Texas vs. Texas A&M, which was won by Texas 6-3. In 1930, the scoring limit was removed and scores began to rise again, reaching 20 points per game in 1936. The average score stayed at least 10 points above par for the rest of the decade but fell back to near modern levels by 1946. From 1947-49, however, the scoring average rose again, this time due to changes made by the NCAA that allowed more points after touchdowns. The rise in average scores continued into the 1950s as more players joined college football and coaches started using more elaborate offensive schemes. By 1959, most games were being decided by margins of less than 10 points and the average score was over 30 points. The high point average came with the emergence of the quarterback as a star player. In 1937, Johnny Mack Brown of Pitt led all quarterbacks with 378 yards passing and 5 TDs while acting as his team's primary rusher too. He also kicked five extra points without a miss.