Furbush was eligible to come off the 15-day disabled list Saturday, but Mariners manager Eric Wedge said he'll remain with the Rainiers for at least another outing.
"He felt good and threw a lot of strikes, but he still needs at least one more," Wedge said. "I kind of felt that way before. I wanted him to have at least two [games], and then we'll see where he's at."
Furbush has been outstanding in a relief role this year (4-2, 2.17 ERA in 34 appearances), but Wedge said there's no temptation to consider him as a starting candidate going forward.
"Not for me," said Wedge. "We kind of pinpointed him as this when we traded for him and everything has played out pretty nice. He's a great weapon in the bullpen."