good colors, and some good shots.
i used to race mountain bikes, good to see some shots of that sort of thing.
overall they are a bit on the dark side i think... fast shutter, cloudy skies...
not sure what you did with the shots, but i have been messing with custom white balances in dullish light situations, and had some good luck getting truer colors, and whites/blacks. i have been trying to capture motion in a different sort of way.
i wish i had more time to get out and shoot events. its fun
Deliberately under-exposed to avoid blown out whites and to get about 1/1250 shutter on a dull day with my Sigma 70-200 F2.8 (ISO 100 -- 400), so the pics are a bit dark.
besides the comments already made about the pics being a bit dark, I just want to comment on the site itself, the gray textured background really takes away from the photos. From a designer's stand point, you want to use a format and layout that puts all focus on your artwork especially when it's good work like yours :-)
Nice sporting pics, best I have seen on this site in a while. Yes, take
GoldBerry's advice and fix that textured background, I agree that it does seem to detract from your presentation.