Beane continues to pile up prospects:

The A's traded outfielder Nick Swisher, a former star with the River Cats, to the Chicago White Sox on Thursday for three top minor-league prospects.

Oakland acquired left-handed pitcher Gio Gonzalez, right-handed pitcher Fautino De Los Santos and outfielder Ryan Sweeney.

Swisher becomes the second major player traded this off-season by the A's, who also dealt star pitcher Dan Haren for number of prospects to the Arizona Diamondbacks last month.

The 27-year-old Swisher hit .262 with 22 home runs and 78 RBIs in 150 games in 2007, his third full season with the A's. He hit 80 home runs, a franchise record for a switch-hitter.

Gonzalez, who pitched for Double-A Birmingham in 2007, was 9-7 and led all minor-league pitchers with 185 strikeouts.

De Los Santos, the South Atlantic League's Most Outstanding Major League Prospect, was a combined 10-5 with a 2.65 ERA for Single-A Kannapolis and Single-A Winston-Salem.

Sweeney, who was named the White Sox No. 1 prospect by Baseball America entering the 2007 season, hit .270 with 10 home runs and 47 RBI in 105 games at Triple-A Charlotte.