I watched 3 games at the start of the third set. Zverev's level was very, very high. It has still been a good tournament for Jake.
Thanks for the quick report. I never expected Jake to win this but from the scores, he didn't get flattened (which was also a possibility I feared.)
And with breaking Zverev's serve in the second and third sets (and getting break points in another game), it looks like Jake was doing something he seems to do quite well: figuring out a new opponent in the first set and adjusting his own game to better counter him.
So yes, a good tournament and should be a new CH at the end of it, inside the top 80!