Pirates placed 2B Neil Walker on the 15-day disabled list, retroactive to April 27, with a laceration on his right hand. Walker required six stitches in his right index finger last Friday after he had his hand stepped on at second base. The Pirates were hoping that Walker could avoid a stint on the disabled list, but he made little in the way of progress over the past few days. However, if all goes well, he should be ready to return as soon as he's eligible next weekend. Brandon Inge will continue to fill in at second base.