I've got Blalock - who's obviously tearing it up but he doesn't always start against lefties. Randa is my backup. Polanco is available and is listed as 2B/3B which could provide a valuable backup to Castillo if needed and a 1 or 2 a week 3B starter when Blalock doesn't start.
I'm in a Yahoo, 5x5 league. I lose production with Polanco but I gain average and a 2 position backup. Is the loss of production worth it? I mean, we're talking backups here.
My position players are rounded out by Pudge, Huff/Durazo, Castillo, A Gonzalez (Cubs), G. Anderson, Everett, Sheffield, Ibanez/V. Wells