ST. PETERSBURG -- Rehabbing Pirates starter Gerrit Cole, on the disabled list with right shoulder fatigue, threw a six-inning, 84-pitch simulated game at Tropicana Field before Monday's series opener against the Rays.
Among the batters to face Cole was second baseman Neil Walker, who is eligible to come off the DL Tuesday.
"I thought it went very well," manager Clint Hurdle said. "The volume of work -- six ups, 84 pitches. Threw his two-seamer, his four-seamer, his curveball -- probably more than his slider -- his changeup was good, the finish to his fastball was firm and solid.
"We'll see how he feels tomorrow, but I thought it was a very good next challenge that, from at least the perspective of today, he was able to meet and do well with."
There's a chance Cole could return to start Saturday's game against the Mets, but Hurdle said he's not making a firm decision about Cole or the weekend rotation until the team knows for sure the status of the right-hander's shoulder.
Cole is 6-3 with a 3.64 ERA this season, and last pitched on June 3 in San Diego.
David Adler is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.