Complex sentence: Ronald Merrill Theobald (born July 28,1943) is an American former second baseman in Major League Baseball for the Milwaukee Brewers during the early 1970s.
Split into simpler sentences: Ronald Merrill Theobald (born July 28,1943) is an American former professional baseball player and a former Major League Baseball second baseman. He played professionally for the Milwaukee Brewers during the early 1970s.