I was very excited to see how my Canon EF 100-400 f/4.5-5.6L IS II lens will perform at a football match, considering that it needs to focus as quickly as possible. Well, I was not disappointed. In fact I was pretty much amazed by the results.
Unfortunately the match started at 14:00, so it was the worst light possible, as the sun made it a little difficult to get a good exposure.
Technical details: Canon EOS 6D camera, Canon EF 100-400 f/4.5-5.6L IS II lens, AV mode, ISO 100-250, shutter speed from 1/1000 to 1/4000.