By Jennifer Piacenti Plus-money bets and analysis for Friday’s Mets-Marlins, Mariners-Astros and Rangers-Angels games. It’s Friday and that means it’s time to get in on the MLB action! As the trade deadline approaches, be sure to pay attention to the news close to first pitch. Players could get pulled and lineups could change and that means the odds could shift as well. I’m presenting the value I see as of Friday morning, but it could be worthwhile to wait until closer to game time Friday to finalize your wagers. If you’re just starting to follow, in my MLB bets series I try to only pick plus-…