Struff lost to Tiafoe but it was a very close match, this will be Struff's first ATP title if he can beat his opponent, he played pretty well only his opponent played even more solidly despite the pressure from the crowd that was on the German's side.
Yes, Struff played really great. He started well and Tiafoe was a bit better in the decisive moments. Otherwise he would have won his first ATP tournament. So far he has tried it 200 times. But if he keeps playing like this he will win his first tournament this year. I am curious to see how he will perform in Halle.