Trumaine Johnson hopes this isn’t his only successful season with the Rams. Johnson, the Rams’ top cornerback, understands his six-season tenure with the Rams could be in its twilight, as he is set to become an unrestricted free agent when this season ends. A few months ago, Johnson seemed resigned to departing from the only NFL team for which he has played, and hinted that the Rams no longer seemed to want him. Now, with the Rams enjoying what is by far the best season of Johnson’s career, he seems to have some optimism about staying around. “I don’t think tend to think about it too much, but of course I think about it,” Johnson said after Friday’s practice at Cal Lutheran. “I know it will come. It usually comes after the season, so we’ll see. My focus is on this last game and making a run in the playoffs, and everything else will take care of itself.” Either way, Johnson will be fine. He turns 28 on Monday and still should have some prime seasons left. Even if the Rams don’t re-sign Johnson, other teams will be happy to offer multi-year contracts to the lanky team captain who has 11 career interceptions and has been solid in coverage this season. There’s something more, though. Johnson is a native of Stockton and has enjoyed having family nearby, and he feels something for the Rams, who drafted him in the third round out of Montana in 2012.