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If Gamel and Healy are healthy, the bench if Ichiro/?/Marjama/Romine.
If Healy is healthy, but not Gamel, the bench is Romine/Marjama/?/back-up outfielder (if Heredia is starting, it's Ichiro on the pine and vice versa).
If neither are healthy, the bench then has to include the first base platoon so it becomes Romine/Marjama/one of Ford or Vogs/one of Ichiro or Heredia, with the other of those pairs starting that day.