Here is an actual good picture and camera angle on the exact same step as the photo think he is on the line with.
http://www.tracktalkusa.com/wp-content/uploads/2012/08/Baton-Change1.jpg
Just to clarify even more, Here is the next time Gay's left foot hits the track, still in between the lines.
http://www.tracktalkusa.com/wp-content/uploads/2012/08/Baton-Change.jpg
