Vaughn's offensive production has improved in the week since the Sox called up first base prospect Tim Elko — and it's not because Vaughn is feeling the pressure, he says.

After hitting 10 home runs in 31 games for the Triple-A Charlotte Knights, the White Sox have called up first baseman Tim Elko.

Tim Elko’s first big league hit was a homer. And a decisive one at that. Elko’s three-run shot in the bottom of the sixth inning put the Chicago White Sox ahead to stay.