I think we'll be seeing lefty Sean Manaea before any other prospect this year. Not only does he already appear close to being big league ready -- the A's would still prefer to get him a little Triple-A seasoning before calling him up -- but rotations fluctuate so much in the Majors that the need may arise quickly. I could also see Joey Wendle making his way up to the big leagues this season, since it will probably only take an injury to one of the A's current infielders to make that happen. Keep an eye on first baseman/outfielder Matt Olson, who could quickly pave his own path to Oakland with a strong showing at Triple-A.
Inbox: Which prospects could debut this season?
