With Chicago going with a lefty opener then switching to a righty, the Nats have Mead and House in the top 4 with Garcia late enough at #7 that he's likely to face the righty.
Chicago has their righties in the lineup to face Griffin.
Griffin's ERA / FIP split is due to his low BABIP (.235), high LOB% (88.5%), and his being a bit homer prone (1.69 / 9, 16.1% HR/FB).
Nothing really jumps out about Burke that I can see. Has cut back on walks since last year but has dropped his K rate. K-BB% for both pitchers is comparable.