Jack Zduriencik held a briefing after the Mariners’ 1-0 loss to announce that the team has decided, as expected, to shut down 21-year-old pitcher Michael Pineda for the remainder of the year. There are no physical problems, but the Mariners decided to make the move pre-emptively, because Pineda has reached nearly 140 innings. He threw just 47 last year and also had two stints on the disabled list with elbow problems.