Nothing says Mariners baseball quite like watching a hitter turn into a menace on the road, then come home and start battling the ballpark like it’s the final boss. Maybe that’s a little embellished, but it also gets pretty close to where we are with Randy Arozarena right now. The split is loud enough that we don’t need to treat it like a tiny whisper hiding in the corner. Through this stretch, Arozarena has looked like two different hitters depending on where the Mariners are playing. Away from Seattle, he has been the impact bat they needed when they brought him in. At home, he has still been useful, but the damage has been quieter, the production has been more ordinary, and the whole thing feels a little too familiar. On the road, Arozarena is hitting .367/.457/.506 with a .963 OPS . At home, that line drops to .238/.323/.405 with a .728 OPS . That’s the kind of split that makes everyone glance at T-Mobile Park again and mutter the same thing we’ve muttered for years. Here we go again.…