I might be an anomaly, but unless you count heavy barbell work in the big 3 as 'ab work', I do none at all. Although whether or not I have reasonably developed abs is debatable I suppose.
Tarheel: You don't have abs because you're carrying too much fat, plain and simple. Neglecting ab work over the last few months has nothing to do with it. And for that matter, having visible abs has basically no correlation to being good at high school level sports.
In order to give diet recommendations, we need to know how you eat now, how long you've been eating that way, and how your weight has changed within that timeframe. Otherwise, there is no way to give proper advice.
I didn't start with your bodytype, but I have gained about 75 lbs, mostly muscle, since I started lifting, and I've stayed lean the entire time, so I have a reasonable understanding of the process. The first picture is me at 18, the 2nd picture is me at 31.