During the Quaker State 400 at Atlanta, Denny Hamlin played it conservatively and he still ended up getting himself involved in a wreck. Going into the NASCAR Playoffs, Hamlin wanted to finish top-20 in each of these first three races. Off to a bad start already. Denny Hamlin is a smart drafting-track racer. In the past, he has been able to sit back and wait to make moves. Today, it felt like he was far too conservative, not willing to take track position when he could get it in favor of keeping a clean car. Well, on the last lap of the race, Hamlin was still in a wreck. He finished P24 on the…