This is what rotoworld said about him.
White Sox signed LHP Kevin Walker, who had been with the Giants, to a one-year, $525,000 contract.
We certainly didn't see Walker getting a major league deal. He had a 4.26 ERA and a 1.64 WHIP in 69 2/3 IP for Triple-A Fresno last season. The 28-year-old former Padre once looked like one of the game's top young lefty relievers, but he has struggled to regain his old form since undergoing Tommy John surgery in 2001. It's not very likely that he'll help the White Sox as a lefty specialist. Nov. 24 - 1:44 pm et