Looks good. Panning shots are cool. Good perspective too.
Here's one I shot before my race at the local weekly crit:
70-200m at f/2.8
ISO 100
1/90s (iirc, possibly 1/60)
2nd curtain sync, with in-camera flash (canon 550d)
I'm still learning. In future panning shots, I'm not going to leave the lens wide-open. The depth of field is too shallow to expect a lot of keepers with a bike race. With a panning shot, the non-subject material will blur w/out worrying about the depth of field. So, I'll probably shoot f/8 or f/11 next time.
I love the f/2.8 on the fast shutter shots though.