I doubt Prior will go as low as 11th in many drafts, but note the warning in the SportsWeekly fantasy preview this week:
"The scouts say he has picture-perfect mechanics, and they may be right, but there's no disputing the fact that he threw the most pitches per start of any major leaguer (113). He then averaged 123 pitches over three postseason starts. This at the tender age of 22. It undoubtedly will continue unless and until he breaks down -- what manager could bring himself to consistently give an early hook to the majors' most effective pitcher?"
Prior is on their list of "burnout candidates", where pitchers with heavy workloads before their mid-20s have a higher risk of injuries.