Glad to see that Rublev won the title. Could not follow the match this time, just watched some long highlights (nowadays we luckily get some highlight reels that are between 10 and 15 minutes, and without time between the points the end result is that you see about 30% or more of the points played in the match, so you can really have a good idea of how it went).
The scoreline (6x3 6x0) tells the story of a blowout, but the first was decided with a single break of serve, and Harris had the first break opportunity that Rublev saved with a pretty good lob that Harris managed to get it, but could not avoid the net. It was a contest right until the end of the first, Rublev had to earn the points to close it out.
Then the second was a completely different story. It started with a break of serve and was one way traffic from there.
The Russian is now #16 in the world, and with 3 titles since October (2 in 2020), riding in a 12 match winning streak in the process. He is playing easily top 8 level to say the least.
His greatest weapon now is not his big forehand actually (that when clicks is a complete absurd, but his rally shots are "normal"), but the grit he is showing. There is a Nadalesque resolve in his play when he is down break points. That champions attitude is the greatest improvement I see on him.
Off course the back hand has improved a lot. It used to be a liability and now he can even sometimes finish points with it. He is much more solid overall, a little less offensive oriented, even adopting the slice now and then. But the most important improvement game-wise I saw was the return of serve. Off the forehand, his ROS was completely top shelf in these last two matches.
He is also going forward with some frequency which is a good thing, normally following his big forehand, but still...
The liabilities are mainly the second serve (both FAA and Harris were able to run around it and attack with relative ease), and still some lack of a plan B, even if he is able to dose better the level of aggression. A giant improve from the player he was a year ago. Right now against a guy like A. Zverev for example he is total favorite to my eyes, and expect him to have one big scalp at least at AO. Quarters seem a distinct possibility and if he continues like this he could be an outside contender for bigger things latter in the year. The most important thing in tennis is the mind set, and in that department he seems to be right there with best right now. Game wise, overall still a lot to improve to join the elite, but if he continues to show this grit even when the winning streak is over, than I would say that the he already has the most important ability of all.