"Instead of day to day, we'll go week to week," manager Cito Gaston said. "We want to make sure he's healthy when he comes back."
Downs missed about three weeks from mid-June to early July with the same injury. Gaston suggested he may have returned a little too early last time. He was 0-3 with two blown saves and a 9.00 ERA in nine games after he was activated.
On Saturday night against the A's, Downs entered with a two-run lead and got only one out before he was removed because of the injury. Jack Cust lined a single off Downs' leg, but Gaston said he didn't think that was what aggravated the injury.
"I think it was just on a pitch," Gaston said.
Accardo had a short trip back to the big leagues. He had been optioned to Triple-A Las Vegas on Friday to make room for newly acquired reliever Josh Roenicke, but he took advantage of his allotted 72 hours to report to the minors. He had never left the Bay Area.