If you look at his season ERA splits, they are clearly better at home and lead to a conclusion that he’s much less effective on the road. However, I prefer to look at his season as a tale of two halves instead – pre and post All-Star break. His home/road splits after July 12th look like this:

Home ERA (after July 12) – 2.35
Road ERA (after July 12) – 2.93

He’s performed a bit better at home, but his only real bad start since July 12 was the 7 ER he gave up in Pittsburgh. I guess what I’m trying to say is we can be pretty confident that he’s one of our best, if not THE best option at home or on the road – despite what the surface stats say.

If anything, our ability to trust him on three days is really allowing us to put Marcum in the best position for him, since his home/road splits have held true the whole season.