Walter McCredie
... that in 1915, Walter McCredie unsuccessfully challenged the baseball color line that prohibited non-white players?
... that in 1915, <b id="mwBbM"><a href="./Walter_McCredie" id="mwBbQ" rel="mw:WikiLink" title="Walter McCredie">Walter McCredie</a></b> unsuccessfully challenged the <a href="./Baseball_color_line" id="mwBbU" rel="mw:WikiLink" title="Baseball color line">baseball color line</a> that prohibited non-white players?