I don't know the answer to that. Hopefully he can now build on his recent successes and can make that push into the top hundred. It's sort of a reverse frustration. In DC when he is playing for his country he seems to be able to pull off some spectacular feats. It would be good if he could start to do it for himself as well. Perhaps it's confidence?
I was just going to speculate that it could be confidence. That might sound wrong, considering that DC has its own pressures, but the pressure is shared amongst the team. Day to day a player is on their own.
I also think part of it could be the difficulty of concentrating at a high enough level all the time against higher ranked players. That can't be easy, finding the right level of focus all the time.
I'd love to see James really break through. He's really shown his worth at the DC for us. It would be great to see him (and Dan Evans) get through to these sorts of tournaments more often.
Watching this, I don't think I've ever seen Lopez look so annoyed.