Greinke, Kennedy, Romero, Scherzer, Danks. Pick 4.

[Xylo]

Greinke vs. Cubs
Kennedy @ SD
Romero vs. O's
Scherzer @ CHW
Danks vs. DET

I can only start four, but am having trouble deciding who to choose. Kennedy and Romero have done work for me all year, while Scherzer, Greinke, and Danks have all had their ups-and-downs. I feel like Greinke is too good to sit, so I suppose it's down to Scherzer or Danks. Any suggestions on which four I should start would be much appreciated.

Thanks!