Seattle entered the night two games back of the Royals for the final AL Wild Card spot, but McClendon said there's no cloud gathering over his club.
"They're not tight. They're just going through a funk," he said. "We just have to keep battling and fighting our way through it. The Oakland A's went through it and we didn't think a thing about it. We were happy about it. And I'm sure they're happy about our little funk. It happens. We just have to keep fighting and grinding it out, and we'll come around."
The Mariners were 71-91 last season and haven't been in the postseason since 2001, so they're in new territory heading into the final two weeks of the season with a playoff berth in sight.
"Given what Seattle was going through the last 10-12 years, if I'd have said leaving Spring Training that on Sept. 16 we'd be two games out of the Wild Card, would you take it?" McClendon said. "I don't think there's anybody associated with the Seattle Mariners who would have said, 'No, we don't want that.'
"You have to keep things in perspective and look at the big picture. My guys have had a fantastic run," he said. "We don't want to look back down that road because it was a little shaky at times, but we can see the finish line and we're going to keep charging ahead."
Mariners ace Felix Hernandez, who'll take the ball in Thursday's series finale against Jered Weaver, said the players are certainly in step with McClendon's belief that Monday was a bad game and it just needs to be forgotten as the focus shifts forward.
"We've got a good feeling," Hernandez said. "Yesterday we got killed, but today we're ready to play. We're fine. We just have to continue fighting and we'll be OK."
Greg Johns is a reporter for MLB.com. Follow him on Twitter @GregJohnsMLB as well as his Mariners Musings blog. This story was not subject to the approval of Major League Baseball or its clubs.