PHOENIX -- D-backs Double-A manager Brett Butler suffered a mild stroke Friday and will be out indefinitely, with Matt Williams taking his place in the interim.
Butler, who has beaten cancer, is expected to make a full recovery, although the stroke has affected his equilibrium. He's resting comfortable in a hospital in Montgomery, Ala.
"He's had some tough luck," said Williams, a former D-back who is Arizona's special assistant to the general partner. "He was one of the best teammates I've ever had, and I just hope first and foremost that he gets well, and I'm going to try to hold it down for him as well as I can."
Williams, who will start on Monday, has said in the past that he would like to eventually manage. He gets his first opportunity with a Double-A squad that includes star outfielders Justin Upton and Carlos Gonzalez.
"I just hope I can fill in well for [Butler]," Williams said. "I'm going to go down and do what I can to help them win and teach a little bit hopefully. We have some very talented players there, so I'm excited about it."
Michael Schwartz is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.