The Astros sent Ensberg and cash considerations to the Padres for a player to be named or cash. The White Sox traded Mackowiak to San Diego for minor league pitcher Jon Link.
The 31-year-old Ensberg was an All-Star in 2005 when he helped Houston reach the World Series, but has not been the same caliber player since tearing a tendon in his right shoulder diving for a foul ball in June of last year.
Mackowiak, who is also 31 years old, is a career .264 hitter with 63 homers and 280 R-B-Is in seven major league seasons with Pittsburgh and the White Sox.
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