In 2018, he may have had a sub-Uecker average in 89 plate appearances, but was still 1.6 wins above replacement. Overall, he had 4.2 wins above replacement in Milwaukee. As a 4th outfielder, not conventional in terms of his offensive profile, but he provides excellent defense. WAR is absolutely meaningless in 89 PA's, especially when most of it comes from defense (and especially when it's from an outfielder).