You've caught some good action there (in the rain too, which makes things more difficult) but the images look as though they would benefit from a contrast boost in post. They look a little soft too but I can't tell if that's because of shutter speed or a focusing issue as the images have had their EXIF data removed.
To reliably freeze the action you should be looking at using a shutter speed of at least 1/800th, ideally 1/1000th+. Also make sure your camera is set to AI Servo mode and track the subject for a second or so before releasing the shutter (back-button focus is useful for doing this) to give it the best chance of locking-on.