Expected outcome. The moment Tiafoe runs into an above-average opponent he's in for a beating. Have you seen him in interviews? This brute has no intellect whatsoever, no matter if we are talking about on the court or away from the court. There's a reason he's been pretty much the only top100 play in years who stopped playing a point because he thought he won the exachange instead of checking for what is actually going on. A very simple man we have here. He'll never make the top20.
Humbert looks poised to have a good year; think his earlier win over Kecmanovic was more noteworthy, despite the impressive scoreline here. Tiafoe, however, seems to be spinning his wheels - though not for the 'reason' in the dogwhistle post above.