On Friday afternoon against the Nationals, the Phillies lost an out then gained one right back in one of the strangest at-bats you’ll ever see. The Official Baseball Rules, as put together by Major League Baseball, are 187 pages long. The document is wordy, it is complicated, and, of course, it is lengthy. Thus, unsurprisingly, there will always be rules with which even the most ardent of baseball fans are unfamiliar. One such rule came into play during the Philadelphia Phillies game on Friday afternoon. Things started out normally enough. It was the bottom of the seventh, and Zach Eflin…