Hi, my name's lifeform...
...and I am a recovering San Diego closer owner.
I had Villafuerte for the few several weeks of the season, and then played the guessing game for a while after Villafuerte lost the job.
It's not worth it. You're better going without a closer. If you're really desperate, you might take a chance on John Rocker taking the job from Lance Carter in Tampa Bay.
Hope this helps.
If just one person refrains from picking up a SD "closer" because of my message, then... well, it was worth it.
Everything you know is wrong.