Lefty Jordan Montgomery, who was in San Francisco on Thursday, will be activated in time to start Friday’s game in his team debut, and the D-backs will need to make a corresponding roster move. While that had figured to be lefty Logan Allen, who was called up prior to Wednesday’s game against the Cubs at Chase Field, they may want to hang onto him to start in Nelson’s place if he has to go on the injured list.
Allen was in the bullpen when Nelson got hurt and immediately started stretching, knowing that as the long man in the ‘pen he would likely get the call if Nelson couldn’t continue.