I am by no means an expert on sports photography, but I know that I desire at least 1/500 and minimum DOF when shooting sports. It makes sense to me use AV, open up the aperture as wide as I can, and bump my ISO as needed to hit the 1/500 + mark. This way, I have minimum DOF and always the fastest shutter possible for each particular shot.
Why do so many of you shoot in manual or TV for sports? I wouldn't like TV because my DOV may be increased, which is bad (for me), and manual seems strange because lighting conditions change rapidly when outdoors and vary indoors as well depending on where you stand.
I always use custom WB, but am I missing something by not using manual exposure?