Montgomery was officially recalled as the 26th man prior to starting Game 2 of Wednesday's doubleheader against the Indians.
Since he is serving as the 26th man, he may be briefly sent down after the game, but should be back up shortly after to serve as a long reliever out of the bullpen. If the Yankees have a need of a sixth starter at any point in September, however, Montgomery would likely be the top choice. He will face Ryan Merritt in this spot start.