Yu Darvish had another Yu is Darbage outing. Four innings pitched, 97 pitches, 6 walks, one run . . . his control was awful enough to get seven strikeouts.
Montgomery came back from his injury rehab to throw five innings of winning relief.
Which leads to a problem and a solution.
Darvish cannot command his stuff. Montgomery wants to be a starter. Darvish has such a fragile mental state that Maddon has to take baby steps with him. Monty has been the good soldier since he became a Cub.
At some levels in minor league baseball, teams have a "tandem" system for starting pitchers. In a game, one starter is delegated to throw 3 or 4 innings and then another starter comes in to throw 3 or 4 innings. In theory, this is less strain on a young arm by limiting innings per start. But at the same time, it helps to build up arm strength.
There was always a question on why Montgomery's minor league rehab was to stretch him out like a starting pitcher. The Cubs have their long reliever with Chatwood. But perhaps the Cubs inability to get a real closer is making the front office think about moving Chatwood to a late inning role.
But in the Marlins game, it was shown that the combination of Darvish and Montgomery can work in a "tandem" situation. I would not be surprised that Montgomery will not be used until Darvish's next scheduled start.