Isn't there some rule that a player ranked as high as Tursunov can't play in a challenger tournament like this?
Fee explained why in the Challenger thread:
Week 11: Sunrise, USA [Winner: Gaël Monfils]
I think it's a good idea for guys like Monfils or Massu who have been struggling lately.
Monfils needs to win matches, to get rid of this feeling he can't close out a match anymore. Plus he just started working with his new coach, it's a perfect occasion for Delaitre to watch him and to try out new things.
But I'm not so sure for Tursunov indeed, it looks like he was still having issues with his wrist, so why play one more event?
(There were many other players with a better ranking or in better form than Monfils or Massu, btw, like Gicquel, Vliegen, Hrbaty, Mayer, del Potro... But they've all lost in the early rounds.)