I think this is going to be John Yuda, he's small, he's light and he has a very economical gait. Not only that he is world class at every distance from 5k up and I heard a rumour that whilst he was here in london he did a session of 10x400 with 30 seconds rest in 54/55! Not bad for a half marathon man! I think its a shame Tergat stopped running on the track, I think he would have been a better competitor over the marathon if he had. Any opinions?