With the Blue Jays starting a lefty in Sunday's series finale, Jaso will sit for that one, too, giving him additional time to rest. The hope is that he's available come Monday, when the A's begin a four-game set with the Tigers at home.
The catcher has endured back discomfort for some time, according to Melvin, and it worsened on the turf in Tampa, where he was pinch-run for in the ninth frame of Thursday's 11-inning affair.
Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.