Cordero, who has 329 career saves, has been removed from the role, but for how long is anybody's guess.
"It's something I'm going through, but it's been like that the whole year," Cordero said. "The last month I pitched well was June, but other than that I've not been playing well. It's not like I haven't had the opportunities. They've been putting me in games."
Cordero blew ninth-inning leads in back-to-back games last week against Cincinnati, and after coming on in relief of Bud Norris in the seventh inning on Tuesday in Milwaukee, he proceeded to blow his third save.
"They brought me here because they thought it would work out, and it's not been that way," he said. "I think I can help the young guys here, but pitching the way I've been pitching is not what I want and not what they want."
Cordero, 37, hopes to get a few solid outings under his belt away from the pressures of the ninth inning with the idea of perhaps returning to the closer role.
"I just need to keep battling and trying to pitch and get right," he said.