perfect game
... that Charlie Robertson pitched a perfect game in his fourth Major League Baseball start?
... that <a href="./Charlie_Robertson" id="mwAwE" rel="mw:WikiLink" title="Charlie Robertson">Charlie Robertson</a> pitched a <b id="mwAwI"><a href="./Charlie_Robertson's_perfect_game" id="mwAwM" rel="mw:WikiLink" title="Charlie Robertson's perfect game">perfect game</a></b> in his fourth <a href="./Major_League_Baseball" id="mwAwQ" rel="mw:WikiLink" title="Major League Baseball">Major League Baseball</a> start?