The Tigers built back-to-back playoff runs on the mindset of competing for 27 outs. Just because their postseason hopes are fading doesn’t change that. Say what you will about the importance of September baseball for teams that are on the wrong side of the standings. The Tigers see value in the at-bats they put together in Saturday’s seven-run eighth inning for an 11-7 win over the Rockies at Comerica Park. More importantly, they see value in the frame of mind behind the rally. “We talked a little bit before the game with the young guys about small details,” manager A.J. Hinch said. “And we’re not performing in close games as well as we’re going to. But you have to go live it. You have to experience it. “I can tell them a story about the ‘24 team that came from behind and \[when\