Sinner closed in and played well on important points. On the other hand Carlos played terrible shots and made unforced errors in the game. Sinner broke back.and even in that last game. I don't know why he was trying to volley when Sinner was so close to.the base line
Probably because he was feeling the pressure and wasn't feeling comfortable playing longer rallies from the baseline, especially towards the end of the second set.
/Odesy 
Roy Gesley