From what I saw in the match it was quite bad, from what I read just 25% of 1st serves in the 1st Set or so. If anyone saw Thiem in this match, I am not sure how could you say he's a ballbasher -- his FH, as we know is quite a potent AND accurate force, was both the opposite today for some reason. After losing that 1st Set he just didn't look like he want to win this at all, not being patient or just letting Basilashvili dictate him. Long story short, he just played bad/not full effort, but didn't do much to try to improve it, accepting a loss.
That's 2 250's this year where he went to "I Dunn Care" mode (after Sydney) which, removing post-RG (where in the past 2 years he typically doesn't do well, which is of course something he should build upon), is quite unusual for Thiem who is typically consistent and doesn't get upsetted against very lower ranked players, even on HC. Not sure if it is protest against Bresnik (who IMO is the one who is pushing for Thiem to play these many tournaments, which Thiem might not want to anymore) or a lull after a big year, but I still think doomsday is not there yet, although this is a big symptom now, and doesn't bode well about his certainty to stay in the Top 10 this year.
Rotterdam next -- with poor Richard Krajicek losing Stan and Nadal, I think he'll be the top seed. From what I read from Ben Rothenberg, he's shockingly 16-16 since Wimbledon I think. The latter season slump is something he should improve but adding that with a season starter dud is a step backwards for him. If he still doesn't do well in Rotterdam, I say that is the time to be alarmed.
P.S. I don't the comments here -- he played sub-par here but then people STILL think he's a "vulture" (which is still annoying seeing any player developing their game like Domi is still gives them a reason to play lots of matches) when his best result this year is in AO with 3 wins.
Players have their haters, but I never get how Domi has. He's got a great game, a good sportsman, very open with supporters as seen with his FB tales, and a hardworker. I still think he has the game to be on top, but I agree he has to reassess how he should approach the game now or fear being held back.