A veteran of 233 big league games with Atlanta, Arizona, St. Louis and the New York Mets, Boyer, 31, had battled arm problems in recent seasons. Signed as a Minor League free agent, he was in the Royals' Major League camp this year. According to reports, he had regained the velocity on his fastball and was pitching well for Omaha.
Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.