"I can't change Juan," Guillen said. "Juan is a veteran player, and he knows what he's doing.
"His legs don't respond the way he wants right now. Maybe with this weather, he's kind of stiff a little bit. We'll wait to see later how he's doing. He's a smart player, and he knows what he has to do to get better."
Pierre had 68 stolen bases during his first year with the White Sox and was caught 18 times.