<page_title> List of Major League Baseball pitchers who have thrown an immaculate inning </page_title> <section_title> Players </section_title> <table> <cell> Al Downing <col_header> Pitcher </col_header> <col_header> John Clarkson </col_header> <col_header> Rube Waddell </col_header> <col_header> Pat Ragan </col_header> <col_header> Joe Oeschger </col_header> <col_header> Sloppy Thurston </col_header> <col_header> Dazzy Vance </col_header> <col_header> Lefty Grove </col_header> <col_header> Lefty Grove (2) </col_header> <col_header> Billy Hoeft </col_header> <col_header> Robin Roberts </col_header> <col_header> Jim Bunning </col_header> <col_header> Sandy Koufax </col_header> <col_header> Sandy Koufax (2) </col_header> <col_header> Tony Cloninger </col_header> <col_header> Sandy Koufax (3) </col_header> <col_header> Bob Bruce </col_header> </cell> </table>
Downing was one of the Major League Baseball pitchers who have thrown an immaculate inning.