Just a quick photo here explaining. This is the exact same gym some time later, and this is the exact end of the floor in the same very pitiful lighting situation. However, instead of using the 70-200 f/2.8L II IS at f/2.8, 1/500, ISO 5000, I used the 135 f/2L, f/2.2, ISO 5000. In post I still had to go +0.40 exposure, but much better.
bdun...have you given thought to the sigma 85 1.4?
Yes. But only if it performs better than my 85 f/1.8 at f/2.2. I don't shoot wider than f/2.2 in sports because of DOF, especially with a shorter lens with an 85mm vs. a 135mm. With the 200 f/2L, I'll shoot at f/2, but only side shots where I can focus on the players' faces. Do you know if it performs better? Thanks.