(adsbygoogle = window.adsbygoogle || []).push({}); 1969 1974 1984 2004 2009 San Diego Padres Team Formation In 1969, the San Diego Padres joined the ranks of Major League Baseball as one of four new expansion teams, along with the Montreal Expos, now the Washington Nationals, the Kansas City Royals and the Seattle Pilots, now the Milwaukee Brewers. Their original owner was …