The Pirates have released minor-leaguers Adenson Chourio, Christian Colonel, Casey Erickson, Pat Irvine, Gerlis Rodriguez, Jose Solano and Mike Williams. Of those, the only one that's mildly surprising is Erickson, who was acquired in the Eric Hinske deal two years ago has put up good numbers in relief in each of the last two seasons, albeit at levels he was too old for. Chourio got about 200 at bats between West Virginia and Bradenton last year and didn't do much with them. Colonel was acquired this offseason, presumably to back up at the corners at somewhere around the Class AA level, but apparently that won't work out. Williams pitched for West Virginia last year and was unimpressive.