I'm always for letting your starter go until he proves he can't, or shouldn't go any longer. Owings was doing extremely well, and they put in Slaten who hasn't pitched much at all lately, a very risky move, which obviously didn't pay off.
EDIT: Game over, Dbacks lose. The two causes, not sending Upton and sitting Owings. In other words, overly conservative managing.
EDIT: Game over, Dbacks lose. The two causes, not sending Upton and sitting Owings. In other words, overly conservative managing.