Assuming an outdoor 400m track.
The two runners start at the same time; the first to be able to lap (technically half-lap) the other one is winning (so he/she has to do 200m than the other in the same time).
Which specialist would be better suited for these events? I am thinking of 1500m specialists.
The 400m specialists could go for a quick win but they will probably slow down and be unable to restart.
Does this event exist?