Really? Mediocre? That's pretty strong for a guy who's been hitting extremely well. And no one's even come close to comparing him to Robin Yount. That's hyperbolic.
On the plus side, Rom's throwing a lot of hittable pitches (one to Donaldson, two to Tyrone, and two more to Monasterio). On the minus side, the Brewers are doing absolutely nothing with those pitches.