IF the track is fast (like the sign says) you know what that means... Put down a 5-3 quinella! KIDDING!
I love horses but don't dig the racing. When a person gets injured in a sport they stay out the season. When a horse gets hurt, they get euthanized on the track. That being said, the shots are clear, crisp and good. Your first photo, IMO lacks a strong subject, but who cares! You're at one of the holy lands of horse racing. You take as many photos as you can!