What's This Football Play Called?

I started doing this play in Madden 08 and I was wondering what its called in real life. It's very effective with the Eagles for some reason, but I'm sure it works with other teams as well. I've tried it on all skill levels and it works wonderfully. I choose a halfback dive, dip in a little bit, and then go back out and run around the outside, usually for a gain of 15 or so, and occasionally a touchdown, because Westbrook is so fast and the O-Line is so good. I don't know if this is a counter or what. Can someone help me out?