Very well written article. Mejia gave us all of 25 innings last season, and I'm not convinced he's healthy. Perez's and Mejia's ceilings are virtually identical and Perez has a higher floor(unlikely Mejia puts in 7-8 years). This signing gives us flexibility at a very reasonable price. If Mejia, Gonsalves, Stewart,Thorpe or Littell become a world beater, we can move Perez to the pen or DFA him. Note, when moved to the pen, Perez's velocity spikes.