I also watched a bit of both matches - Blu was OK but he was always playing catch-up, all a bit approximate - had an MTO at 4-5 down in the second set (not sure why) - and he's developed a really ugly backhand slice
JoMo put me in mind of Henry Patten - he's got a lot more chunky (which makes sense, given his age, and is all to the good) and so is now a tall, well-built guy, with a leftiness to him, and a very good forehand and serve when they get in play, but slight backhand problems and doesn't mix it up quite as well as Henry. It was very close in the third set but I always felt that Nathan would just get it.