Frankie Montas is slated to make his first big league appearance of the season today starting against the Diamondbacks. This will be just his third start in the majors.

Yet he's opened a favorite against Zach Greinke. The Diamondbacks are struggling, but I'm not buying this. Greinke still is an elite pitcher. Who is Montas to be favored against Greinke?

Greinke is pitching on extra rest, too. Arizona is 12-4 the past 16 times he has pitched on five days rest.

The A's can be tough at home. I recognize this. But they aren't some super power. They don't steal bases, are bad defensively, their bullpen is down a key setup man and their top slugger, Khris Davis, is out.