Soto is hitting .237 with one home run over just 38 plate appearances this season. Soto missed the first three months of the season with a meniscus tear in his right knee. He then strained his groin during his third game of the season in July and remained on the disabled list through the first week of August.
Unless a corresponding move is made, Soto will be the fourth catcher on Oakland's active 25-man roster, joining John Jaso, Derek Norris and Stephen Vogt. Sunday's intra-division move came just hours after Oakland exercised a wavier claim on Tampa Bay Ray's shortstop Yunel Escobar.
Oakland entered play Sunday night with a 76-52 record, tied with its division-mate the Los Angeles Angels for not only the best record in the American League West but throughout all of baseball.
- Will Green