i like this attempt - my only concern is that it evokes racing. this would be an incredible logo for F1 and or NASCAR or some other such motorsports - but it doesnt translate as well to all sports in my opinion. i really like your work though and think you are very talented.
on entry #15 above - can you make the 44 blue (the same color of the blue in the barcelona soccer jersey - a pic of which i attached to the contest specs). also, can you submit one with the tag line words in color grey. nice work - simple and strong. thanks!