I have not watched the match and do not intend to do so. Might be painful. On a good day any player can beat the top players. This also happened today to Schwartzman, who lost to a certain O‘Connell (I don‘t know him). Hurkacz lost to Mannarino, all of them in 3 sets.
It was a great opportunity for Andy to reach the next round, but for whatever reason this wasn‘t to be. His opponent apparently had a very good day, Andy may have been flat (or exhausted from playing unusually much tennis recently).
Yes, the defeat is disappointing. Yet, I hope Andy does not lose the motivation for keeping on. I so love seeing him on court.
Thanks for the info, and you are right.