Did he beat you up and steal your lunch money as a kid? 1) He's not "on his way down", he's in his prime. He's 28 years old, established, and having a pretty good year. Yes, Parra is 3 years younger, but that makes him more expensive too. 2) He gives teams something that's hard to find, and Parra does not. (good leadoff guy) 3) He plays well above average defense at a critical defensive position. Parra does this as well. 4) He's also a above average hitter for the same position, as is Parra, but he's lacking the leadoff OBP skills Span has. 5) Both are cheap, though Span is cost controlled. I'm not saying that Parra isn't valuable, but let's be realistic... this is hardly a slam dunk. Parra has been in the league one less year, so it isn't as if Parra is somehow massively cheaper... He's just a year behind in the arb process, and his main comparable is likely Denard Span. They are very similar players. Due to his age and this little problem that he Arizona franchize is on the rise and that they might still consider themselves as contenders, Parra is going to cost a lot more, and he has more question marks to go with it. I doubt he gets moved anytime soon unless AZ gets an absolute haul.