The drag on balls dropped to 2019 levels, which is the year baseball's homer records exploded. Barrel distance is up +10.2 ft from April to now, the biggest in-season jump since Statcast started tracking. That's nearly double the normal +4.6 ft seasonal improvement from weather alone. Almost every contact-quality metric spiked in the same window in late May/early June. MLB either swapped in a new batch or changed specs entirely. The evidence is there in the aerodynamics. This is the same league that owns the ballmaker and has humidors in every park. They know exactly what they're doing.