First of all, sprinting will make you ripped. No special diet is entirely necessary. Simply doing sprinting (in and of itself) will make your diet less important. The more you do, the better your body will be at getting carbs and proteins into your muscles for recovery. That’s not an excuse to eat like crap. The caveat is that the better your nutrition, the better your recovery will be, and therefore allowing you to do more sprinting, leading to a better physique, and performance.
Stay away from sugar, unless it’s around your training time. This single thing will probably have the biggest impact on your physique. Also, aim to get ~200 grams of protein per day. Meat is best, followed by dairy. Get a ton of veggies and good EVOO (California is best) for the monounsaturated fats, and fish oil, or cans of sardines for the omega 3s. For carbs, the cleaner the better. Rice and starchy veggies should be the bulk.
The biggest thing you can learn about nutrition is that food others swear by may not apply to you. For example, many swear by oats, saying that they are important to sports nutrition. Oats are a fine food for many, but some people, myself included, do better not eating them. I had it stuck in my head that nutrition was a formula for a long time, so I ate oats and just plugged away. Over time, I learned to listen to my body and come to my own conclusions. I’m not saying don’t eat oats. I’m saying that you should learn to come to your own conclusions.
Good luck in prepping for the upcoming season.