Objectively, there was nothing unfamiliar about last night for Mariners first base coach Kristopher Negrón. He put on a professional baseball uniform, like he’s been doing since the Boston Red Sox drafted him in the seventh round of the 2006 Draft; he stepped into a Major League dugout prior to a game, like he’s been doing since June 7, 2012 when he made his playing debut with the Cincinnati Reds; and he filled out the lineup card, like he did so many times last year as he guided the Tacoma Rainiers to the Triple-A West title.