With free-agency looming, the huge remaining question mark for the Red Sox remains the closer position. BoSox Injection writers have covered numerous pieces about potential player pickups, what the bullpen might look like this season if the Red Sox should re-sign Craig Kimbrel, and how the season might play out. How does the Red Sox bullpen compare to our rivals, the Yankees? What opportunity does this situation create for others? Could Matt Barnes step into his role as the closer if Kimbrel bolts?