Opening Day starting pitcher
... that Joe Hatten was the Brooklyn Dodgers' Opening Day starting pitcher when Jackie Robinson broke the color line in Major League Baseball on April 15, 1947?
... that <a href="./Joe_Hatten" id="mwCjA" rel="mw:WikiLink" title="Joe Hatten">Joe Hatten</a> was the <a href="./Brooklyn_Dodgers" id="mwCjE" rel="mw:WikiLink" title="Brooklyn Dodgers">Brooklyn Dodgers</a>' <b id="mwCjI"><a href="./List_of_Brooklyn_Dodgers_Opening_Day_starting_pitchers" id="mwCjM" rel="mw:WikiLink" title="List of Brooklyn Dodgers Opening Day starting pitchers">Opening Day starting pitcher</a></b> when <a href="./Jackie_Robinson" id="mwCjQ" rel="mw:WikiLink" title="Jackie Robinson">Jackie Robinson</a> broke the <a href="./Baseball_color_line" id="mwCjU" rel="mw:WikiLink" title="Baseball color line">color line</a> in <a href="./Major_League_Baseball" id="mwCjY" rel="mw:WikiLink" title="Major League Baseball">Major League Baseball</a> on April 15, 1947?