Maybe the Tigers are gaining some traction. They’ve won two of the last three series, won three of four games overall including Sunday’s dramatic 4-3 win over Minnesota. There’s a bit more consistency in all departments. And with a key four-game series beginning Monday against second-place Kansas City, the turnaround is in just the right time. Afterward, there was a belief the worse may finally be over. “We know what we have to do,” reliever Joba Chamberlain said. “We have to win series. This was a good series to win, with KC coming in, they’re playing good baseball. “This was one of those wins it took everybody.” This victory came suddenly in the ninth.. Victor Martinez drove a long fly ball to the right-field wall, which Twins right fielder Oswaldo Arcia dropped, allowing Torii Hunter — who opened the inning with a single — to advance to third . “I thought the ball was gone,” Martinez said. “I hit it good. The wind was stronger than me.” It didn’t take long, though, for the Tigers to get the winning across home plate. J.D. Martinez lifted a sacrifice fly to center field, scoring Hunter for the Tigers’ third walk-off victory this season.