Wilkerson is scheduled to have season-ending surgery on his right shoulder next week and was placed on the 15-day disabled list on Wednesday. Wilkerson has been bothered by his ailing shoulder all season and hasn't played since Aug. 9. The Rangers hoped rest would help, but the injury hasn't improved. (Updated 8/17/2006) Analysis: Wilkerson batted .222 this season with 14 homers and 44 RBIs in 95 games. He also struck out a team-high 116 times.