It's POSSIBLE.. especially if your site does not earn much.. But you're going to need to make a few more posts, and they'll have to be good ones..
Most posts that get all the traffic have hundreds of others ad code listed. I do not think most people make much money off Dp and most make more on own site.
It is possible, if you are not earning much from your site and you are active at DP, then yes, there is a chance!
i'll add to that and say don't put ur google adsense codes on ur site - then DP will be ur highest earner