I really like these, especially the first one - the colours are simple but fresh and I think the graduated white to turquoise is effective - it immediately makes me think of the sky, which I associate on a metaphorical level with aspiration; and also water, fluidity and movement - all essential things in sport.However, I think your images are strong enough to simply be that - images. So perhaps experimetn with not using text? It may encourage your audience to 'consider' your work more.
thanks for advice! i will take that into account!