Good thread, some poster on another board also thinks this race is a big deal.
Although the field is interesting and excellent, I think that Gatlin will be hard to beat, he has just been so solid this year. He doesn't make mistakes. In order to beat him, somebody will have to run a very excellent race.
Lemaitre, excellent though he is at 200m, could very well come last in this race. He just won French nationals in a horrible time like 20.5, but I think he was just trying for the win, because he also won the 100 in a SB 10.14, I think (another race he might have just been trying to win, idk, I haven't been able to find a video).
He should go pretty well considering that 100m speed is closing in on 10.10, but seriously, I can see him finishing dead last, the field is that good.
Ashmeade won his latest 100 in 9.97, gaining on and passing everybody after 50m, he looks particularly good, and is just about as good as Gay over even 100m. Given his racing, his last 100m, and his apparent speed endurance fitness, I would take him to edge out Gay at this point.
Also like an earlier poster said it will depend very much on lane draw.
Also if Lashawn Merritt were in this field he would be right in the mix, I think.
Gatlin, then Ashmeade, then Edward, is my guess. This is the first sprint in a long time that I'm going to watch. I hope nobody scratches.