Rochette's current ranking is made up largely of one ITF 15k win in Turkey back in Nov 17. He's got a couple of SFs from around the same time. More recently, he's only made QFs and L16 - although he used to be a decent player some years back, and certainly has experience, he's not an overly strong top seed now, that's for sure.
Good luck to George.
Seems like the momentum has done a 180º turn as George races into a 4-0* lead. I hope George can see this through from here more easily than he did in the 1st set.