Every Major League Game Played Under the Lights for the First Time

On August 9, 1946, all eight major league games scheduled for that Friday were played at night, marking the first time in baseball history that an entire day's slate took place under artificial lighting. Four American League and four National League contests were played simultaneously across eight cities, every one of them a night game.

The milestone reflected how quickly night baseball had spread through the sport after a cautious beginning. The Cincinnati Reds had hosted the first major league night game on May 24, 1935, when President Franklin Roosevelt pressed a telegraph key from the White House to ceremonially switch on the lights at Crosley Field. Attendance that evening was more than double the Reds' typical weekday crowd, and the financial argument for night baseball was immediate and obvious.

By 1946, every team in both leagues had installed lights except the Chicago Cubs, who held out until 1988. Teams that once viewed night baseball as a gimmick now scheduled it regularly, drawn by the larger gate receipts from fans who could attend after work. The war years had accelerated the shift. With factories running around the clock during World War II, evening games were often the only option for working-class fans.

The all-night schedule on August 9 was not planned as a deliberate first. It happened organically, the natural result of teams independently choosing to play under the lights on a summer Friday. That made it more telling than a coordinated stunt would have been. Night baseball had moved from novelty to default.

The 1946 season was a boom year for attendance across the sport. Fans returning from military service, combined with a thrilling pennant race in both leagues, pushed total major league attendance past 18 million for the first time. Night games were a significant part of that surge. What had been an experiment just eleven years earlier had become the backbone of the schedule.