If you're going to mix it up ...

With the competition in the Nationwide Series as tight as it is, there are countless battles for position every lap. Within those battles are personalities, and the drivers were asked who they love mixing it up with the most.

Source: http://nascar.com/news/101229/nationwide-favorite-driver-race-against/index.html?eref=/news/headlines/bg

Peter de Klerk Christian Klien Karl Kling Ernst Klodwig Kamui Kobayashi