Given that the first thing Mattingly pointed to in support of Sellers was his glove work, the answer to that should be pretty obvious. If not, the .167 batting average through 12 games is a dead giveaway. Sellers does not have much of a track record in the minor leagues that would indicate he is capable of being a Fantasy producer; just a pair of double-digit home run seasons played mostly in the inflated hitting environment of the Pacific Coast League.  

Sellers has an abnormally low .192 batting average on balls in play, but even that does little to explain away his lack of Fantasy value. Sellers is dreadfully lacking in power, with just one extra-base hit in 41 at-bats. He is strikeout prone for a hitter without much power, a bad combination that is unlikely to lead to a high average. Outside of maybe the rare 14-team, NL-only Fantasy league, Sellers is simply not worth your time. 

Sellers also has one home run, one RBI and three walks in his last three games.

Sellers can draw walks, but he relied on a high flyball rate and favorable park effects to achieve his power numbers. His flyball-hitting ways won't produce the same results in Dodger Stadium, so owners won't get much from Sellers in any category. He can be bypassed in virtually all Fantasy formats.