[oldalum]

The comparison is complicated by the fact that basketball shots travel much shorter distances than baseballs.
One loosely reported empirical analysis of free throw percentages at altitude vs. lower locations found:

When we compared how visiting players performed away from and at Denver, the difference became even larger. Outside of the Pepsi Center, these players shot 76.0%, but at this higher elevation, they shot just 74.5%. Once again, our results were significant, yielding a p-value of 0.0143.  https://harvardsportsanalysis.wordpress....ercentage/

[oldalum]

The comparison is complicated by the fact that basketball shots travel much shorter distances than baseballs.
One loosely reported empirical analysis of free throw percentages at altitude vs. lower locations found:

When we compared how visiting players performed away from and at Denver, the difference became even larger. Outside of the Pepsi Center, these players shot 76.0%, but at this higher elevation, they shot just 74.5%. Once again, our results were significant, yielding a p-value of 0.0143.  https://harvardsportsanalysis.wordpress....ercentage/