Complex sentence: John Karl Wetteland (born August 21,1966) is a former Major League Baseball pitcher who specialized as a closer for the Los Angeles Dodgers, Montreal Expos, New York Yankees, and Texas Rangers.
Split into simpler sentences: John Karl Wetteland (born August 21,1966) is a former Major League Baseball pitcher. During a 12-year baseball career, he pitched from 1989-2000, pitching for four different teams: the Los Angeles Dodgers, Montreal Expos, New York Yankees, and the Texas Rangers.