Following the scoreboard, Zeballos was struggling to win any points at all on Polansky's serve, especially in the 2nd set.
Polansky had a BP at 5-5 in the 2nd to allow him to serve for the match, but didn't convert.
He must have fallen away badly in the 3rd after pretty much dominating the 2nd set but not closing it out.
Every game was a struggle for Zeballos in the second set, even his own service games. Hung in there, I guess.
So close to the upset.