You know that every Captain that isn't whiteboy or Kenpachi is a jobber.
This time, they're just jobbing for Jobber#1.
I don't know, I think just Komamura and the Vizard Captains tend to be jobbers. Maybe Soifon and Ukitake as well. The others just don't get as much action as the favoured characters, except Kenpachi, Hitsugaya and possibly Byakuya.