Aerobatic Manoeuvres

My new found love (OK it is now officially an obsession
) meant that on the weekend, after the zoo, I wandered through Bondi looking for some interesting shots.
The skate bowl is just a complete hive of activity. I found the challenge was to focus where I wanted, have enough shutter speed for a crisp subject, but not lose the sense of motion. I think I failed.
So I am turning to the experts I have seen on here that accomplish this regularly...
My question is - what is the blurriness in these photos - particularly the first two? Is it poor focus - or more likely a too slow shutter speed? And secondly, in general terms, how do you do about selecting a shutter speed for moving subjects?
EXIF data is under the photos for reference. Thanks in advance.
#1: 1/200 f14 ISO100 25mm
#2: 1/200 f14 ISO100 25mm
#3: 1/400 5.6 ISO100 24mm

The skate bowl is just a complete hive of activity. I found the challenge was to focus where I wanted, have enough shutter speed for a crisp subject, but not lose the sense of motion. I think I failed.

My question is - what is the blurriness in these photos - particularly the first two? Is it poor focus - or more likely a too slow shutter speed? And secondly, in general terms, how do you do about selecting a shutter speed for moving subjects?
EXIF data is under the photos for reference. Thanks in advance.

#1: 1/200 f14 ISO100 25mm

#2: 1/200 f14 ISO100 25mm

#3: 1/400 5.6 ISO100 24mm