Masahiro Tanaka said his arm is fine, but then explain why he’s 0-3 with a 17.51 ERA in his last four starts? If Friday night's start against Oakland at the Stadium isn’t any better, then the Yankees should be a lot more concerned than they are right now. Maybe they should consider having Tanaka undergo an MRI exam. If they Yankees are going to remain atop the American League East standings, they need a Tanaka to start pitching like the ace of the staff.