By C. Trent Rosecrans
Quentin, 29, is arbitration-eligible and will be a free agent after the 2012 season. He hit .254/.340/.499 with 24 home runs in 118 games for the White Sox in 2011 and made $5.05 million. While Quentin made his second All-Star team in 2011, he played in just one of Chicago's last 37 games because of a shoulder injury. He is a career .252/.346/.490 hitter in parts of six seasons with the White Sox and Diamondbacks.
"Improving our offense is a priority this offseason," Padres general manager Josh Byrnes said in a statement released by the team, "and the acquisition of Carlos gives us a proven middle-of-the-order bat. We specifically targeted Carlos because of his production and his hard-nosed style of play."
Quentin is a San Diego native.
Castro, 23, was 7-8 with a 5.63 ERA at Double-A and Triple-A, striking out 94 batters in 115 innings and 22 starts. He was Baseball America's No. 58 prospect in baseball before the 2011 season. Hernandez, 22, was 10-3 with a 3.49 ERA in three minor-league levels, striking out 94 in 116 innings, while walking just 22. He pitched in 28 games with 18 starts.For more baseball news, rumors and analysis, follow @EyeOnBaseball on Twitter, subscribe to the RSS feed and "like" us on Facebook.