I decided to do some quick research to see if Janko has played Potito before. I figured there was a chance.
They played each other on Hard Court in 2003 at a Challenger in Cherbourg, France. I think that the ATP site may have the surface wrong though.
Anyway...Potito had won that match in 3 tight sets: 3-6 7-6 4-6
But that was also when Janko was up & down mentally. It appears to me that his mental game has come together and caught up with the physical