R1: Kovalík - Zopp
I occasionally looked at livescore. (I do not know whether point-by-point breakdown for tournaments of this level is available somewhere. Or at least stats such as number of BPs.)
In the first set he was down *4:5, 15:40, but he managed to keep his service game and the first set ended with tiebreak.
In the second set he was down 2:4, but then he managed to break Zopp's service and get to 4:4. Then he lost his service again.