Beltran update

To follow up what I wrote last week re: Beltran, Will Carrol of Baseball Prospectus wrote in his column today about the brace that Beltran is now wearing. It's an Ossur CTi OA brace, and from the company's web site, this is who the brace is intended for:

Indications for Use
Mild to severe unicompartmental osteoarthritis
ACL, MCL, LCL, PCL, rotary and combined instabilities

Beltran is going to attempt to run at some point this week. If he is able to run pain-free, then he will try to accelerate his rehab program and get back to the Mets as soon as he can. If he is still unable to tolerate running, surgery may be the last resort.

So if Beltran can run pain-free, the bigger question is IF/how he will be able to play the cavernous centerfield at Citi Field. Neither Francoeur nor Bay are able to play there defensively. If Beltran is no longer even a league average center fielder (when he used to be a top defender), then how valuable is he?