Alex Slitz/Getty Images Michael Soroka could have an impact as a reliever for the Cubs. The Chicago Cubs acquired Michael Soroka to shore up their starting rotation in second half. But he may end up making their bullpen more dangerous in October. Soroka was listed as the Cubs’ postseason X-factor by The Athletic , in an article that was published Monday. Soroka has thrown just two innings in a Cubs uniform since they acquired him from the Washington Nationals for prospects Ronny Cruz and