By Emma Baccellieri When the benches clear and the flighting starts, it’s time for the pitchers in the bullpens to sprint. Welcome to The Opener, where every weekday morning during the regular season you’ll get a fresh, topical story to start your day from one of SI.com’s MLB writers. There are two parts to every baseball altercation. One is everything that happens on the infield—where the scuffle begins and the dugouts quickly empty out. And the other is the journey through the outfield, long and traditionally futile, in which relievers dutifully cover hundreds of feet from the bullpens just …