I think playing one baseball game a day, 6 days a week, along with associated workouts and warmups, doesn't require add'l rest, in most cases. I doubt sitting a day adds anything to the mix. And the "data" argument goes both ways, btw. Provide some evidence sitting a day helps a baseball player perform better, or stays healthier. Or the added performance results in higher bottom line production than the production you lost by sitting the player. Show me that 5 games of X performance is better than 6 games of X-whatever, if your contention is that not sitting hurts performance.* *not proven, by the way.