Chicago ? Big Z’s shoulder pain might not be a big problem for the Chicago Cubs. Right-hander Carlos Zambrano has a minor strain in his right shoulder but no major structural damage, a team spokesman said after the Cubs’ 4-3 victory over the Chicago White Sox on Friday.

Zambrano underwent an MRI arthrogram, a test in which dye is injected into the troubled area to provide a more detailed look, at Northwestern Memorial Hospital on Friday and headed home. He will meet with the trainers and coaching staff today.